CN113660073A - A communication method and device - Google Patents

Abstract

The present application provides a communication method and apparatus for improving the performance of uplink transmission. The method determines and transmits capability indication information for the terminal, and the capability indication information is used to determine a power reduction factor. The power reduction factor is the ratio of the actual transmit power sum of n non-zero antenna ports to the channel transmit power, and the maximum value of the channel transmit power. is the rated maximum transmit power of the system; the capability indication information is used to indicate at least one codeword; and/or the capability indication information is used to indicate the number of additionally configured SRS ports when the maximum transmission rank value is x, the additionally configured SRS ports The number of SRS ports is different from the maximum number of antenna ports; and/or, the capability indication information is used to indicate whether the configuration of multiple SRS resources with different port numbers is supported when the maximum transmission rank value is x; and/or, the capability indication information It is used to indicate the value of the power reduction factor when the transmission rank value is x, and the value of x is at least one of {1, 2, 3}.

Description

A communication method and device

This application claims the priority of the Chinese patent application filed on January 11, 2019 with the application number 201910028848.8 and the invention titled "a communication method and device", the entire contents of which are incorporated into this application by reference.

technical field

The embodiments of the present application relate to the field of communication technologies, and in particular, to a communication method and apparatus.

Background technique

In a wireless communication system, when a terminal sends an uplink signal, a baseband signal is generated in the baseband, the baseband signal generates a radio frequency signal through a radio frequency transmission link, and the radio frequency signal is sent through an antenna. The radio frequency link includes a radio frequency integrated circuit, a power amplifier (power amplification, PA), duplexer/filter. The terminal will report the antenna capability of the terminal before uplink transmission, and the antenna capability includes parameters such as the number of antenna ports, the number of layers, or the number of antennas. When the terminal supports multiple antenna ports, there is a one-to-one correspondence between transmit antennas, antenna ports and PAs, and different PAs may correspond to different maximum transmit powers. Further, the terminal will also report the maximum coherence capability between each transmitting antenna before uplink transmission. The coherence capabilities include complete coherence capability, partial coherence capability and incoherence capability in descending order. Two transmit antennas. The complete coherence capability indicates that all the transmitting antennas of the terminal have completed phase calibration and can perform phase weighting, that is, all the antennas of the terminal can transmit the same data layer. The incoherent capability indicates that phase calibration has not been completed between any two transmit antennas of the terminal, and neither phase weighting can be performed to transmit the same data layer. Some wanting abilities are somewhere in between. The number of layers refers to the number of layers of the data layer, which may also be referred to as the number of streams, that is, the number of streams of uncorrelated signals included when sending data for precoding. The network device indicates the uplink transmission mode to the terminal by means of a codebook according to the maximum coherence capability between each transmitting antenna reported by the terminal. Specifically, the network device and the terminal pre-store a codebook for uplink transmission indicated by multiple tables, and the codeword in the codebook can be indicated by a precoding indicator (transmission precoding matrix indicator, TPMI) index value, and the codeword is used to determine the uplink transmission. Precoding matrix for data transmission. According to the uplink channel information corresponding to each antenna port, the network device indicates the uplink transmission rank indicator (TRI) and TPMI to the terminal through downlink control information (DCI) signaling, and the terminal sends uplink data according to the TRI and TPMI. The rows in the precoding matrix corresponding to the TPMI indication codeword represent the transmit antenna ports, and the columns represent the number of transmission layers. Row elements that are non-zero represent the antenna ports used for upstream transmission.

时，配置了一个大功率PA的终端设备可以直接支持满功率传输，但配置了两个小功率PA的终端设备只能通过天线虚拟化的方式支持满功率传输，上述实现方式需要终端通知网络设备从而使得网络设备确定上行数据传输的最优TPMI，以及无法获得准确的上行传输的调制和编码方式(modulation coding scheme，MCS)，从而造成上行传输的性能损失。Regarding the transmission power determination method for uplink data transmission, an implementation method in the prior art is that the terminal compares the number of non-zero antenna ports (determined by the terminal according to the currently indicated TPMI) with the total number of antenna ports (the maximum antenna port that the terminal can support). The ratio of the number) is multiplied by the channel transmit power P to obtain the uplink transmit power P ₁ , and the uplink transmit power P ₁ is further equally distributed to each non-zero transmit antenna port. The above ratio is a value less than 1 under some TPMI indications, for example, the TPMI type is a non-coherent codeword (2Tx, 4Tx), or the TPMI type is a partially coherent codeword (4Tx). The terminal, the total sum of actual transmit power of the non-zero antenna ports used by the terminal for uplink transmission is less than the channel transmit power. Since the maximum value of the channel transmit power is the rated maximum transmit power, this power determination method makes the non-zero transmit power used for uplink transmission. The total sum of the actual transmit power of the null antenna ports does not reach the maximum transmit power. Another power determination method in the prior art is that, for terminals with partially coherent or non-coherent capabilities, the channel transmission power P is directly evenly distributed to each non-zero transmission antenna without power reduction, so that terminals with different coherence capabilities are directly distributed. The uplink transmission can reach the rated maximum transmit power. For the above-mentioned another implementation manner, since the antenna shapes (maximum transmit power of each PA) of different terminals are different, selecting different PAs for uplink transmission through TPMI may achieve different maximum transmit powers. For example, when TPMI indicates as

When configured with a high-power PA, a terminal device configured with a high-power PA can directly support full-power transmission, but a terminal device configured with two low-power PAs can only support full-power transmission through antenna virtualization. The above implementation requires the terminal to notify the network device. As a result, the network device determines the optimal TPMI for uplink data transmission, and cannot obtain an accurate modulation coding scheme (MCS) for uplink transmission, thereby causing performance loss in uplink transmission.

SUMMARY OF THE INVENTION

The embodiments of the present application provide a communication method and apparatus, which are used to solve the problem that the prior art cannot implement the solution of the maximum transmit power of the terminal's uplink transmission.

The specific technical solutions provided by the embodiments of the present application are as follows:

In a first aspect, a communication method is provided, where the execution body of the method may be a terminal, and the method may be implemented in the following manner: the terminal determines capability indication information, where the capability indication information is used to determine a power reduction factor, and the power reduction factor is the ratio of the actual transmit power sum of n non-zero antenna ports to the channel transmit power, the maximum value of the channel transmit power is the maximum transmit power rated by the system, and n is a positive integer; the capability indication information is used to indicate a or multiple codewords; and/or, the capability indication information is used to indicate the number of additionally configured sounding reference signal SRS ports when the maximum transmission rank value is x, where the additionally configured SRS port number is different from The maximum number of antenna ports; and/or, the capability indication information is used to indicate whether the configuration of multiple SRS resources with different port numbers is supported when the maximum transmission rank value is x; and/or the capability indication information is used for Indicate the value of the power reduction factor when the transmission rank value is x; wherein, the value of x is one or more of {1, 2, 3}; the terminal sends the capability indication information. It is used to enable the network device to more accurately determine the TPMI and MCS of uplink data transmission based on the capability indication information about power control reported by the terminal device without leaking the antenna architecture of the terminal, thereby ensuring the performance of uplink transmission.

In a possible design, the power reduction factor includes: one or more of n/M, n/N, or 1, where n is a positive integer less than or equal to M, M is the number of ports of the reference signal, and M is a positive integer less than or equal to N, where N is the maximum number of transmission ports that the terminal can support and N is a positive integer. In a possible design, one or more codewords indicated by the capability indication information are represented as an N×A matrix, where A is the current number of transmission layers, and when N=2, the value of A is 1, When N=4, the value of A is one or more of 1, 2, or 3; the status bits of the capability indication information correspond to one or a group of codewords; or, the bits of the capability indication information correspond to A codeword or set of codewords.

其中，a的取值为1或者

和/或，所述能力指示信息指示的一个或者多个码字包括码字组2，所述码字组2包括以下码字：

其中，a的取值为1或者

b的取值为1，-1，j，-j中的至少一个。In a possible design, the one or more codewords indicated by the capability indication information include codeword group 1, and the codeword group 1 includes at least one of the following codewords:

where a takes the value 1 or

And/or, one or more codewords indicated by the capability indication information include codeword group 2, and the codeword group 2 includes the following codewords:

where a takes the value 1 or

The value of b is at least one of 1, -1, j, and -j.

In a possible design, the one or more codewords indicated by the capability indication information include one or more of a first codeword group, and the first codeword group includes at least one of the following codewords:

其中，a的取值为1或者0.5；和/或，

where a is 1 or 0.5; and/or,

The one or more codewords indicated by the capability indication information include one or more of the second codeword group, and the second codeword group includes at least one of the following codewords:

其中，a的取值为

或者0.5；和/或，

Among them, the value of a is

or 0.5; and/or,

The one or more codewords indicated by the capability indication information include one or more of a third codeword group, where the third codeword group includes at least one of the following codewords:

其中，a的取值为

或者0.5；和/或，

Among them, the value of a is

or 0.5; and/or,

其中，e、f、g的取值分别为1，-1，j，-j中的一个或者多个；和/或，The one or more codewords indicated by the capability indication information include one or more of a fourth codeword group, and the fourth codeword group includes

Wherein, the values of e, f, and g are respectively one or more of 1, -1, j, and -j; and/or,

The one or more codewords indicated by the capability indication information include a fifth codeword group, where the fifth codeword group includes at least one of the following codewords:

其中，b的取值为

或者2；和/或，

Among them, the value of b is

or 2; and/or,

The one or more codewords indicated by the capability indication information include a sixth codeword group, where the sixth codeword group includes at least one of the following codewords:

其中，c1和d1的取值分别为1，-1，j，-j中的一个或者多个；和/或，

Wherein, the values of c1 and d1 are one or more of 1, -1, j, and -j respectively; and/or,

The one or more codewords indicated by the capability indication information include a seventh codeword group, and the seventh codeword group includes the following codewords:

其中，e1、f1、g1、e2、f2、g2的取值为1，-1，j，-j中的一个或者多个，；和/或，

Wherein, the values of e1, f1, g1, e2, f2, and g2 are one or more of 1, -1, j, and -j; and/or,

The one or more codewords indicated by the capability indication information include an eighth codeword group, and the eighth codeword group includes the following codewords:

和/或，

and / or,

The one or more codewords indicated by the capability indication information include a ninth codeword group, and the ninth codeword group includes one or more of the following codewords:

和/或，

and / or,

The one or more codewords indicated by the capability indication information include a tenth codeword group, and the tenth codeword group includes one or more of the following codewords:

In a possible design, the five status bits of the capability indication information correspond to zero codewords, one codeword, two codewords, three codewords, and four codewords in the first codeword group, respectively or, the four bits of the capability indication information correspond to the four codewords in the first codeword group respectively; and/or, one bit of the capability indication information corresponds to the second codeword some or all of the codewords in the group; and/or, one bit of the capability indication information corresponds to some or all of the codewords in the third codeword group; and/or, one bit of the capability indication information The bits correspond to part or all of the codewords in the fourth codeword group; and/or, one bit of the capability indication information corresponds to some or all of the codewords in the sixth codeword group; and/or, One bit of the capability indication information corresponds to part or all of the codewords in the seventh codeword group; and/or, one bit of the capability indication information corresponds to the codewords in the eighth codeword group and/or, a bit of the capability indication information corresponds to some or all of the codewords in the ninth codeword group; and/or, a bit of the capability indication information corresponds to the tenth codeword some or all of the codewords in the group; and/or, the two bits of the capability indication information correspond to the two codewords in the codeword group 1 respectively; and/or, one of the capability indication information The bits correspond to one or more codewords in the codeword group 2 .

In a possible design, the three codewords in the fifth codeword group correspond to three bits in the capability indication information respectively, wherein, among the three codewords in the fifth codeword group There are codewords whose non-zero elements are located in the first row, the second row, the third row and the fourth row respectively; or, the fifth codeword group includes one or more of the following codeword sets:

所述码字集合分别对应所述能力指示信息的一个状态位。

The set of codewords respectively corresponds to a status bit of the capability indication information.

In a possible design, the information indicated by the capability indication information includes that the one or more codewords are used to support a power reduction factor of 1, or are used to support actual transmission of n non-zero antenna ports The sum of the powers can reach the rated maximum transmit power of the system, or is used to directly distribute the transmit power of the channel to the non-zero antenna ports, and the one or more codewords are the above-mentioned first codeword group to tenth codeword the codewords in the group or the codewords in the codeword group 1 and the codeword group 2; and/or, the information indicated by the capability indication information further includes other codewords other than the one or more codewords It is used to support that the power reduction factor is 1/N, or to support that the sum of the actual transmit power of n non-zero antenna ports cannot reach the rated maximum transmit power of the system, or to support the channel transmit power to be prioritized. After being multiplied by the power reduction factor, it is equally distributed to the non-zero antenna ports, and the other codewords except one or more codewords are the codewords or codeword groups in the above-mentioned first codeword group to tenth codeword group. 1 and codewords in codeword group 2.

In a possible design, the one or more codewords are used to support a power reduction factor of 1, indicating that SRS resources with different numbers of ports need to be configured. Further, the SRS resources with different port numbers are configured in one SRS resource set.

In a possible design, the one or more codewords are used to support a power reduction factor value of 1, indicating that SRS resources with different numbers of ports need to be configured, and indicating the number of ports for which additional SRS resources need to be configured. Further, the SRS resources with different port numbers are configured in one SRS resource set.

In a possible design, when the first bit of the capability indication information takes a value of 1 and a codeword in one or a group of codewords corresponding to the first bit is indicated by DCI, the first data The power reduction factor is 1, wherein the first data is scheduled by the DCI.

In a possible design, when the first bit of the capability indication information takes a value of 0 and a codeword in one or a group of codewords corresponding to the first bit is indicated by DCI, the first data The power reduction factor is n/M, or n/N, where the first data is scheduled by the DCI.

In a possible design, the capability indication information is used to indicate one or more codewords, and, when the maximum transmission rank is x, the number of ports of the reference signal SRS, when the capability indication information indicates the When there are zero codewords in the first codeword group, or when the bits corresponding to the first codeword group in the capability indication information are all set to 0, when the maximum transmission rank is 1, the The number of ports of the reference signal SRS is an integer greater than or equal to 1; and/or, when the bits corresponding to the fifth codeword group in the capability indication information are all set to 0, when the maximum transmission rank value is 2 , the number of ports of the SRS is an integer greater than or equal to 2.

的比特位置1时，所述SRS的端口数为1；或者，当所述能力指示信息中对应

的比特位置1时，所述SRS的端口数为1。In a possible design, when the capability indication information corresponds to

When the bit position of the SRS is 1, the port number of the SRS is 1; or, when the capability indication information corresponds to

When the bit position of 1 is 1, the port number of the SRS is 1.

In a possible design, the value of x is {1}, {2} and/or {3}; or, the value of x is {1, 2} and/or {3}; or , the value of x is {1} and/or {2,3}.

In a possible design, the value of the power reduction factor of the first data is determined to be n/M or 1, wherein the transmission port of the first data is determined according to the first SRS, and the number of ports of the first SRS is It is the port number of the reference signal SRS indicated by the capability indication information.

In a possible design, the SRS resource set includes multiple SRS resources, the number of ports of the SRS resources in the multiple SRS resources is different, and the number of ports of at least one SRS resource in the SRS resource set is related to the capability The number of ports of the SRS indicated by the indication information is the same, or the sum of the number of ports of some SRS resources in the SRS resource set is the same as the number of ports of the SRS indicated by the capability indication information.

In a possible design, the number of ports of the SRS is less than N, or the type of the SRS is virtualization.

In a possible design, the value of x is {2} and/or {3} and/or {2,3}, the capability indication information is also used to indicate one or more codewords, the A=1 for one or more codewords; or, the value of x is {1} and/or {1,2} and/or {2}, and the capability indication information is also used to indicate one or more codewords, A=3 of the one or more codewords; or, the value of x is {1}, the capability indication information is also used to indicate one or more codewords, the one or more A=2 and/or 3 for multiple codewords.

或

时，所述终端设备请求配置端口数为1的SRS，或者，所述终端设备请求类型为虚拟化的SRS；和/或，所述能力指示信息指示

时，b的取值为1或者

所述功率缩减因子为1。In one possible design, the capability indication information indicates

or

, the terminal device requests to configure an SRS with a port number of 1, or the terminal device requests a virtualized SRS; and/or, the capability indication information indicates

, b takes the value 1 or

The power reduction factor is one.

或

或

或

时，所述终端设备请求配置端口数为1的SRS，或者，所述终端设备请求类型为虚拟化的SRS；和/或，所述能力指示信息指示

或

或

或

或

或

或

或

时，所述终端设备请求配置端口数为2的SRS，或者，所述终端设备请求类型为虚拟化的SRS；和/或，所述能力指示信息指示

或

或

或

或

或

时，所述终端设备请求配置2个端口数为1的SRS，或者，所述终端设备请求类型为虚拟化的SRS。In one possible design, the capability indication information indicates

or

or

or

, the terminal device requests to configure an SRS with a port number of 1, or the terminal device requests a virtualized SRS; and/or, the capability indication information indicates

or

or

or

or

or

or

or

, the terminal device requests to configure an SRS with a port number of 2, or the terminal device requests a virtualized SRS; and/or, the capability indication information indicates

or

or

or

or

or

, the terminal device requests to configure two SRSs with a port number of 1, or the terminal device requests that the type is virtualized SRS.

In a second aspect, a communication method is provided, the method comprising: a network device receiving capability indication information from a terminal; the capability indication information is used to determine a power reduction factor, where the power reduction factor is the actual transmission of n non-zero antenna ports The ratio of the total power to the channel transmit power, the maximum value of the channel transmit power is the maximum rated transmit power of the system, and n is a positive integer; the capability indication information is used to indicate one or more codewords; and/or, The capability indication information is used to indicate the number of ports of the additionally configured sounding reference signal SRS when the maximum transmission rank value is x, and the number of ports of the additionally configured SRS is different from the maximum number of antenna ports; and/or, the The capability indication information is used to indicate whether the configuration of multiple SRS resources with different port numbers is supported when the maximum transmission rank is x; and/or the capability indication information is used to indicate that when the transmission rank is x, The value of the power reduction factor; wherein, the value of x is one or more of {1, 2, 3}. It is used to enable the network device to more accurately determine the TPMI and MCS of uplink data transmission based on the capability indication information about power control reported by the terminal device without leaking the antenna architecture of the terminal, thereby ensuring the performance of uplink transmission.

In a possible design, the method further includes: the network device determines that the power reduction factor of the first data is 1; the network device sends downlink control information DCI to the terminal; wherein the DCI is used for scheduling For the first data, the codeword used in the first data is a codeword in one or a group of codewords corresponding to the first bit of the capability indication information which takes a value of 1 and the first bit.

In a possible design, one or more codewords indicated by the capability indication information are represented as an N×A matrix, where A is the current number of transmission layers, and when N=2, the value of A is 1, When N=4, the value of A is one or more of 1, 2, or 3; the status bits of the capability indication information correspond to one or a group of codewords; or, the bits of the capability indication information correspond to A codeword or set of codewords.

其中，a的取值为1或者

和/或，所述能力指示信息指示的一个或者多个码字包括码字组2，所述码字组2包括以下码字：

其中，a的取值为1或者

b的取值为1，-1，j，-j中的至少一个。In a possible design, the one or more codewords indicated by the capability indication information include codeword group 1, and the codeword group 1 includes at least one of the following codewords:

where a takes the value 1 or

And/or, one or more codewords indicated by the capability indication information include codeword group 2, and the codeword group 2 includes the following codewords:

where a takes the value 1 or

The value of b is at least one of 1, -1, j, and -j.

其中，a的取值为1或者0.5；和/或，所述能力指示信息指示的一个或者多个码字包括第二码字组中的一个或者多个，所述第二码字组包括如下码字中的至少一个：

其中，a的取值为

或者0.5；和/或，所述能力指示信息指示的一个或者多个码字包括第三码字组中的一个或者多个，所述第三码字组包括如下码字中的至少一个：In a possible design, the one or more codewords indicated by the capability indication information include one or more of a first codeword group, and the first codeword group includes at least one of the following codewords:

Wherein, the value of a is 1 or 0.5; and/or, the one or more codewords indicated by the capability indication information include one or more of the second codeword group, and the second codeword group includes the following At least one of the codewords:

Among them, the value of a is

or 0.5; and/or, the one or more codewords indicated by the capability indication information include one or more of a third codeword group, where the third codeword group includes at least one of the following codewords:

其中，a的取值为

或者0.5；和/或，所述能力指示信息指示的一个或者多个码字包括第四码字组中的一个或者多个，所述第四码字组包括

其中，e、f、g的取值分别为1，-1，j，-j中的一个或者多个；和/或，所述能力指示信息指示的一个或者多个码字包括第五码字组，所述第五码字组包括如下码字中的至少一个：

其中，b的取值为

或者2；和/或，所述能力指示信息指示的一个或者多个码字包括第六码字组，所述第六码字组包括如下码字中的至少一个：

其中，c1和d1的取值分别为1，-1，j，-j中的一个或者多个；和/或，所述能力指示信息指示的一个或者多个码字包括第七码字组，所述第七码字组包括如下码字：

其中，e1、f1、g1、e2、f2、g2的取值为1，-1，j，-j中的一个或者多个；和/或，所述能力指示信息指示的一个或者多个码字包括第八码字组，所述第八码字组包括如下码字：

和/或，所述能力指示信息指示的一个或者多个码字包括第九码字组，所述第九码字组包括如下码字中的一个或者多个：

和/或，所述能力指示信息指示的一个或者多个码字包括第十码字组，所述第十码字组包括如下码字中的一个或者多个：

Among them, the value of a is

or 0.5; and/or, the one or more codewords indicated by the capability indication information include one or more of the fourth codeword group, where the fourth codeword group includes

Wherein, the values of e, f, and g are one or more of 1, -1, j, and -j respectively; and/or, the one or more codewords indicated by the capability indication information include the fifth codeword group, the fifth codeword group includes at least one of the following codewords:

Among them, the value of b is

or 2; and/or, the one or more codewords indicated by the capability indication information include a sixth codeword group, where the sixth codeword group includes at least one of the following codewords:

Wherein, the values of c1 and d1 are one or more of 1, -1, j, and -j respectively; and/or, the one or more codewords indicated by the capability indication information include the seventh codeword group, The seventh codeword group includes the following codewords:

Wherein, the values of e1, f1, g1, e2, f2, and g2 are one or more of 1, -1, j, and -j; and/or, one or more codewords indicated by the capability indication information It includes an eighth codeword group, and the eighth codeword group includes the following codewords:

And/or, the one or more codewords indicated by the capability indication information include a ninth codeword group, and the ninth codeword group includes one or more of the following codewords:

And/or, the one or more codewords indicated by the capability indication information include a tenth codeword group, and the tenth codeword group includes one or more of the following codewords:

In a possible design, the five status bits of the capability indication information correspond to zero codewords, one codeword, two codewords, three codewords, and four codewords in the first codeword group, respectively or, the four bits of the capability indication information correspond to the four codewords in the first codeword group respectively; and/or, one bit of the capability indication information corresponds to the second codeword some or all of the codewords in the group; and/or, one bit of the capability indication information corresponds to some or all of the codewords in the third codeword group; and/or, one bit of the capability indication information The bits correspond to part or all of the codewords in the fourth codeword group; and/or, one bit of the capability indication information corresponds to some or all of the codewords in the sixth codeword group; and/or, One bit of the capability indication information corresponds to part or all of the codewords in the seventh codeword group; and/or, one bit of the capability indication information corresponds to the codewords in the eighth codeword group and/or, a bit of the capability indication information corresponds to some or all of the codewords in the ninth codeword group; and/or, a bit of the capability indication information corresponds to the tenth codeword some or all of the codewords in the group; and/or, the two bits of the capability indication information correspond to the two codewords in the codeword group 1 respectively; and/or, one of the capability indication information The bits correspond to one or more codewords in the codeword group 2 .

In a possible design, the three codewords in the fifth codeword group correspond to three bits in the capability indication information respectively, wherein, among the three codewords in the fifth codeword group There are codewords whose non-zero elements are located in the first row, the second row, the third row and the fourth row respectively; or, the fifth codeword group includes one or more of the following codeword sets:

所述码字集合分别对应所述能力指示信息的一个状态位。

The set of codewords respectively corresponds to a status bit of the capability indication information.

In a possible design, when the first bit of the capability indication information takes a value of 1 and DCI indicates a codeword in one or a group of codewords corresponding to the first bit, all the first data bits The power reduction factor is 1, wherein the first data is scheduled by the DCI.

In a possible design, when the first bit of the capability indication information takes a value of 0 and the DCI indicates a codeword in one or a group of codewords corresponding to the first bit, all the first data bits The power reduction factor is n/M, or n/N, wherein the first data is scheduled by the DCI.

In a possible design, the capability indication information is used to indicate one or more codewords, and, when the maximum transmission rank value is x, the number of ports of the reference signal SRS, characterized in that when the capability indication When the information indicates zero codewords in the first codeword group, or when the bits corresponding to the first codeword group in the capability indication information are all set to 0, the maximum transmission rank is 1 , the number of ports of the reference signal SRS is an integer greater than or equal to 1; and/or, when the bits corresponding to the fifth codeword group in the capability indication information are all set to 0, the maximum transmission rank rank is taken as When the value is 2, the number of ports of the SRS is an integer greater than or equal to 2.

的比特位置1时，所述SRS的端口数为1；或者，当所述能力指示信息中对应

的比特位置1时，所述SRS的端口数为1。In a possible design, when the capability indication information corresponds to

When the bit position of the SRS is 1, the port number of the SRS is 1; or, when the capability indication information corresponds to

When the bit position of 1 is 1, the port number of the SRS is 1.

In a possible design, the value of x is {1}, {2} and/or {3}; or, the value of x is {1, 2} and/or {3}; or , the value of x is {1} and/or {2,3}.

In a possible design, the value of the power reduction factor of the first data is determined to be n/M or 1, wherein the transmission port of the first data is determined according to the first SRS, and the number of ports of the first SRS is It is the port number of the reference signal SRS indicated by the capability indication information.

In a possible design, the SRS resource set includes multiple SRS resources, the number of ports of the SRS resources in the multiple SRS resources is different, and the number of ports of at least one SRS resource in the SRS resource set is related to the capability The number of ports of the SRS indicated by the indication information is the same, or the sum of the number of ports of some SRS resources in the SRS resource set is the same as the number of ports of the SRS indicated by the capability indication information.

In a possible design, the number of ports of the SRS is less than N, or the type of the SRS is virtualization.

In a possible design, the value of x is {2} and/or {3} and/or {2,3}, the capability indication information is also used to indicate one or more codewords, the A=1 for one or more codewords; or, the value of x is {1} and/or {1,2} and/or {2}, and the capability indication information is also used to indicate one or more codewords, A=3 of the one or more codewords; or, the value of x is {1}, the capability indication information is also used to indicate one or more codewords, the one or more A=2 and/or 3 for multiple codewords.

或

时，所述终端设备请求配置端口数为1的SRS，或者，所述终端设备请求类型为虚拟化的SRS；和/或，所述能力指示信息指示

时，b的取值为1或者

所述功率缩减因子为1。In one possible design, the capability indication information indicates

or

, the terminal device requests to configure an SRS with a port number of 1, or the terminal device requests a virtualized SRS; and/or, the capability indication information indicates

, b takes the value 1 or

The power reduction factor is one.

或

或

或

时，所述终端设备请求配置端口数为1的SRS，或者，所述终端设备请求类型为虚拟化的SRS；和/或，所述能力指示信息指示

或

或

或

或

或

或

或

时，所述终端设备请求配置端口数为2的SRS，或者，所述终端设备请求类型为虚拟化的SRS；和/或，所述能力指示信息指示

或

或

或

或

或

时，所述终端设备请求配置2个端口数为1的SRS，或者，所述终端设备请求类型为虚拟化的SRS。In one possible design, the capability indication information indicates

or

or

or

, the terminal device requests to configure an SRS with a port number of 1, or the terminal device requests a virtualized SRS; and/or, the capability indication information indicates

or

or

or

or

or

or

or

, the terminal device requests to configure an SRS with a port number of 2, or the terminal device requests a virtualized SRS; and/or, the capability indication information indicates

or

or

or

or

or

, the terminal device requests to configure two SRSs with a port number of 1, or the terminal device requests that the type is virtualized SRS.

A third aspect provides a communication device, the device is applied to a terminal, or the device is a terminal, and the device has the function of implementing the method in any of the above-mentioned first aspect and any possible design of the first aspect, wherein Means corresponding to performing the steps or functions described in the above aspects are included. The steps or functions can be implemented by software, or by hardware (eg, circuits), or by a combination of hardware and software.

In a possible design, the above-mentioned communication apparatus includes one or more processors and communication units. The one or more processors are configured to support the signal processing apparatus to perform the functions in the above-described methods. The communication unit is used to support the communication apparatus to communicate with other devices, so as to realize the function of receiving and/or sending. For example, sending capability indication information.

Optionally, the communication device may further include one or more memories, which are used for coupling with the processor and which store necessary program instructions and/or data of the device. The one or more memories may be integrated with the processor, or may be provided separately from the processor. This application is not limited.

The communication unit may be a transceiver, or a transceiver circuit. Optionally, the transceiver may also be an input/output circuit or an interface.

The device may also be a communication chip. The communication unit may be an input/output circuit or an interface of a communication chip.

In another possible design, the above communication device includes a transceiver, a processor and a memory. The processor is used to control the transceiver or the input/output circuit to send and receive signals, the memory is used to store a computer program, and the processor is used to run the computer program in the memory, so that the apparatus performs the first aspect or any one of the first aspects possible design methods.

In a fourth aspect, a communication device is provided, the device is applied to a network device, or the device is a network device, and the device has the function of implementing the method in any possible design of the second aspect and the second aspect , which includes corresponding means for performing the steps or functions described in the above aspects. The steps or functions can be implemented by software, or by hardware (eg, circuits), or by a combination of hardware and software.

In a possible design, the above-mentioned communication apparatus includes one or more processors and communication units. The one or more processors are configured to support the signal processing apparatus to perform the functions in the above-described methods. For example, the communication unit is invoked to receive and/or transmit signals. The communication unit is used to support the communication apparatus to communicate with other devices, so as to realize the function of receiving and/or sending. For example, receiving capability indication information, and sending downlink control information according to the first codeword.

Optionally, the communication device may further include one or more memories, which are used for coupling with the processor and which store necessary program instructions and/or data of the device. The one or more memories may be integrated with the processor, or may be provided separately from the processor. This application is not limited.

The communication unit may be a transceiver, or a transceiver circuit. Optionally, the transceiver may also be an input/output circuit or an interface.

The device may also be a communication chip. The communication unit may be an input/output circuit or an interface of a communication chip.

In another possible design, the above communication device includes a transceiver, a processor and a memory. The processor is used for controlling the transceiver or the input/output circuit to send and receive signals, the memory is used for storing a computer program, the processor is used for running the computer program in the memory, so that the apparatus performs the second aspect or any one of the second aspects possible design methods.

In a fifth aspect, a system is provided, the system includes a terminal and a network device, wherein the terminal is configured to execute the method described in the first aspect or any possible design of the first aspect; The network device is configured to perform the method described in the second aspect or any possible design of the second aspect.

In a sixth aspect, a computer-readable storage medium is provided for storing a computer program, the computer program comprising instructions for executing the methods in the above aspects.

In a seventh aspect, a computer program product is provided, the computer program product comprising: computer program code, which, when the computer program code is run on a computer, causes the computer to perform the methods in the above aspects.

Description of drawings

1 is a schematic diagram of a communication system architecture in an embodiment of the application;

2 is a schematic flowchart of a communication method in an embodiment of the present application;

FIG. 3 is one of the schematic diagrams of antenna forms that can be finally supported by two antenna ports in an embodiment of the present application;

FIG. 4 is the second schematic diagram of an antenna form that can finally be supported by two antenna ports in an embodiment of the present application;

FIG. 5 is a third schematic diagram of an antenna form that can be finally supported by two antenna ports in an embodiment of the present application;

FIG. 6 is one of the schematic diagrams of antenna forms that can finally be supported by the four antenna ports in the embodiment of the present application;

FIG. 7 is the second schematic diagram of an antenna form that can finally be supported by a 4-antenna port in an embodiment of the present application;

FIG. 8 is a third schematic diagram of an antenna form that can finally be supported by a 4-antenna port in an embodiment of the present application;

FIG. 9 is a fourth schematic diagram of an antenna form that can finally be supported by a 4-antenna port in an embodiment of the present application;

FIG. 10 is a fifth schematic diagram of an antenna form that can finally be supported by a 4-antenna port in an embodiment of the present application;

FIG. 11 is a sixth schematic diagram of an antenna form that can finally be supported by a 4-antenna port in an embodiment of the present application;

FIG. 12 is one of the schematic structural diagrams of the communication device in the embodiment of the application;

FIG. 13 is a second schematic structural diagram of a communication device according to an embodiment of the present application.

Detailed ways

Embodiments of the present application provide a communication method and device. A terminal implicitly reports an antenna architecture of a terminal by reporting a codeword according to a codeword pre-defined with a network device. On the basis of not leaking the antenna architecture of the terminal, the network The device can more accurately determine the TPMI and MCS of the uplink transmission according to the codeword, thereby ensuring the performance of the uplink transmission.

The method and the device are based on the same concept. Since the principles of the method and the device for solving the problem are similar, the implementation of the device and the method can be referred to each other, and the repetition will not be repeated.

In the description of the embodiments of the present application, "and/or" describes the association relationship of the associated objects, indicating that there may be three kinds of relationships, for example, A and/or B may indicate that A exists alone, A and B exist simultaneously, and a single relationship exists. There are three cases of B. The character "/" generally indicates that the associated objects are an "or" relationship. In this application, at least one refers to one or more; multiple refers to two or more. In addition, it should be understood that in the description of this application, words such as "first" and "second" are only used for the purpose of distinguishing the description, and should not be understood as indicating or implying relative importance, nor should it be understood as indicating or implied order.

The signal processing methods provided in the embodiments of the present application can be applied to various communication systems, for example, a long term evolution (long term evolution, LTE) system, a worldwide interoperability for microwave access (WiMAX) communication system, a future fifth 5th Generation (5G) systems, such as new radio access technology (NR), and future communication systems, such as 6G systems.

The network architecture and service scenarios described in the embodiments of the present application are for the purpose of illustrating the technical solutions of the embodiments of the present application more clearly, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. The evolution of the architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

FIG. 1 shows the architecture of a possible communication system to which the communication method provided by the embodiment of the present application is applicable. Referring to FIG. 1 , the communication system 100 includes: the communication system 100 includes a network device 101 and a terminal 102 .

The network device 101 is a device with a wireless transceiver function or a chip that can be provided in the device, and the device includes but is not limited to: an evolved Node B (evolved Node B, eNB), a radio network controller (radio network controller, RNC), a node B (Node B, NB), base station controller (base station controller, BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved NodeB, or homeNode B, HNB), baseband unit (baseband unit) unit, BBU), access point (AP), wireless relay node, wireless backhaul node, transmission point (TRP or transmission point, TP) in wireless fidelity (wireless fidelity, WIFI) system ), etc., can also be 5G, such as, NR, gNB in the system, or, transmission point (TRP or TP), one or a group (including multiple antenna panels) antenna panels of the base station in the 5G system, or, also It may be a network node that constitutes a gNB or a transmission point, such as a baseband unit (BBU), or a distributed unit (distributed unit, DU).

In some deployments, a gNB may include a centralized unit (CU) and a DU. The gNB may also include a radio unit (RU). The CU implements some functions of the gNB, and the DU implements some functions of the gNB. For example, the CU implements the functions of the radio resource control (RRC) and the packet data convergence protocol (PDCP) layer, and the DU implements the radio link. Control (radio link control, RLC), media access control (media access control, MAC) and physical (physical, PHY) layer functions. Since the information of the RRC layer will eventually become the information of the PHY layer, or be transformed from the information of the PHY layer, therefore, under this architecture, higher-layer signaling, such as RRC layer signaling or PHCP layer signaling, can also It is considered to be sent by DU, or, sent by DU+RU. It can be understood that the network device may be a CU node, a DU node, or a device including a CU node and a DU node. In addition, the CU may be divided into network equipment in the access network RAN, and the CU may also be divided into network equipment in the core network CN, which is not limited herein.

Terminal equipment may also be referred to as user equipment (UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile equipment, user terminal, terminal, wireless communication device, user agent or user device. The terminal device in the embodiments of the present application may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (VR) terminal device, and an augmented reality (AR) terminal device , wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical, wireless terminals in smart grid, transportation safety wireless terminals in smart cities, wireless terminals in smart homes, and so on. The embodiments of the present application do not limit application scenarios. In this application, a terminal device with a wireless transceiver function and a chip that can be installed in the aforementioned terminal device are collectively referred to as a terminal device.

In order to facilitate the understanding of the embodiments of the present application, the concepts and basic knowledge involved in the embodiments of the present application are first introduced.

First, the concept of the antenna port is introduced.

Including the antenna port of the uplink data channel, such as the antenna port of the physical uplink shared channel (PUSCH); the antenna port of the demodulation reference signal, such as the antenna port of the demodulation reference signal (demodulation reference signal, DMRS); or used for An antenna port of a channel sounding reference signal, such as an antenna port of a sounding reference signal (sounding reference signal, SRS). An antenna port refers to an antenna port used to carry a specific physical channel and/or a physical signal. Signals sent through the same antenna port, no matter whether these signals are sent through the same or different physical antennas, the channels corresponding to the paths they travel through in space can be regarded as the same or related, that is, in the same antenna The signal sent by the port can be considered by the receiving end to be the same or related to the channel during demodulation. Antenna port is a logical meaning. Usually, the signal receiving end identifies signals with different transmission channels through the antenna port. In this application, an antenna port may be considered as a transmission antenna port, and an antenna may be considered as a transmission antenna. Specifically, the antenna ports of PUSCH and DMRS are usually logical ports, that is, the antenna ports of each PUSCH and DMRS can be virtualized through the physical port of the terminal device, or can be weighted by a specific precoding matrix on multiple physical ports. For the logical port formed on the port, the antenna port of each PUSCH and DMRS may correspond to one transmission layer. For the antenna port of the SRS, it can be either a physical antenna port, that is, the transmission link of each terminal corresponds to an antenna port of the SRS, and the transmission link includes a transmission link composed of a radio frequency RF, a power amplifier PA, and a physical antenna; or The logical port, that is, the antenna port of each SRS is formed by virtualizing multiple physical antennas or transmission links.

The following describes the codebook-based uplink transmission mechanism.

Before uplink transmission, the terminal will report the antenna capability of the terminal, and the antenna capability can be reported through radio frequency parameters. Antenna capability can include the number of antennas, the maximum number of transmission layers corresponding to PUSCH and DMRS that can be supported, the number of radio frequency links, the number of antennas, the number of PAs, the number of SRS antenna ports that can be supported, the maximum number of radio frequency links or the maximum number of antennas any one or more of. The number of antennas may include, for example, 1, 2, or 4, and may be reported directly or implicitly reported through the maximum number of SRS antenna ports. The number of transport layers refers to the number of streams of orthogonal signals formed by a transport block (TB) or codeword (codeword) in space, and the transport layer can be mapped to each antenna port for transmission according to a precoding method. For example, the terminal uses four antenna ports to send data, but the same layer of data is sent using the same precoding method using the four antenna ports, and another layer of data is sent using the four antenna ports using another precoding method. . For another example, the four antenna ports include port 0, port 1, port 2 and port 3. The terminal uses ports 0 and 1 to transmit layer 1 data, and uses ports 2 and 3 for layer 2 data. There is a correlation between the above-mentioned different antenna capabilities: the maximum number of transmission layers corresponding to PUSCH and DMRS that can be supported is equal to the number of SRS antenna ports that can be supported (in one SRS resource), and they are the same as the transmission link of the terminal. Or the number of antennas is usually the same. For example, one 4-antenna terminal device can usually support a maximum of 4 layers of PUSCH transmission, and can also support a maximum of 4-port SRS resource configuration. One or more of the above antenna capabilities corresponds to N in the present invention, that is, the maximum number of antenna ports.

Further, the terminal will also report the maximum coherence capability between each transmitting antenna. For a terminal supporting a maximum of 2 antenna ports, the coherent capability includes a fully-coherent capability and a non-coherent capability. Among them, the fully-coherent capability indicates that phase calibration is completed between the two transmitting antenna ports of the terminal, and phase weighting can be performed, that is, two transmitting antennas can be used to transmit the same layer of data. The non-coherent capability indicates that the phase calibration is not completed between the two transmitting antennas of the terminal, and phase weighting cannot be performed to transmit the same layer of data, that is, only one antenna can be used to transmit the same layer of data.

For a 4-antenna (port) terminal, coherent capabilities include fully-coherent capabilities, partially-coherent capabilities, and non-coherent capabilities. Among them, the fully-coherent capability indicates that all the transmitting antennas of the UE have completed phase calibration and can perform phase weighting, that is, all the antennas of the UE can transmit the same data layer. Partially-coherent capability means that the phase calibration is completed within the UE's paired transmit antenna groups, and phase weighting can be performed, while the UE's paired transmit antenna groups have not been phase calibrated, and phase weighting cannot be performed, that is, the antenna group The 2 transmit antennas inside can transmit the same layer of data. The non-coherent capability indicates that phase calibration has not been completed among the four transmit antennas of the UE, and phase weighting cannot be performed to transmit the same data layer, that is, for the same layer of data, only one antenna can be used for transmission.

The network device needs to obtain channel information before scheduling uplink data. At this time, the terminal needs to send a sounding reference signal (sounding reference signal, SRS). The network device performs uplink frequency selective scheduling by receiving and measuring the SRS to determine the uplink channel quality. Since the terminal may have multiple transmit antenna ports, usually the SRS resource of the terminal has multiple ports, which respectively correspond to the multiple transmit antenna ports of the terminal. The base station can obtain channel information on each transmit antenna by measuring multiple ports of the SRS, so as to indicate the precoding mode of each transmit port used for uplink data such as PUSCH transmission. Usually, the base station will configure the number of antenna ports in the SRS resource equal to the maximum number of SRS antenna ports reported by the terminal, so that an appropriate terminal antenna port can be selected for data transmission.

The network device indicating to the terminal the precoding mode of each transmission port and selecting an appropriate antenna port for data transmission may be implemented in a codebook-based manner. Both the network device and the terminal store multiple codebooks in advance for different numbers of antenna ports, different layers or different waveforms. A codebook can also be thought of as a collection of codewords. For example, the codebook for uplink transmission as shown in Table 1-Table 7. Each codeword in the codebook is arranged in the order of increasing TPMI index value from left to the most in the table. In practical applications, the terminal sends the SRS on the SRS resource configured by the network device. If there are multiple ports, the SRS can be sent on the multiple ports respectively. The network device receives and measures the SRS on the corresponding SRS resource to obtain uplink channel information. Based on the channel information, the network device indicates the number of transmission layers (transmission rankindicator, TRI) and TPMI for uplink transmission to the terminal through downlink control information (such as DCI). The terminal sends uplink data according to the TRI and TPMI indicated in the DCI. Further, if multiple SRS resources are configured, SRS resource selection information (SRS resource indication, SRI) is also indicated in the DCI, and the terminal device sends the PUSCH using the antenna port used for sending the SRS on the SRS resource indicated by the SRI. Wherein, when indicating the codeword or TPMI, the network device selects a codeword matching the coherence capability of the terminal according to the maximum coherence capability of the terminal. For example, the maximum coherence capability reported by the terminal is fully coherent, and the network device may indicate the use of fully coherent, partially coherent, and incoherent types of codewords, or the use of partially coherent and incoherent types of codewords, or the use of incoherent types of codewords For another example, if the maximum coherence capability reported by the terminal is partial coherence, the network device indicates to use partial coherent and non-coherent type codewords, or to use non-coherent type codewords.

In Tables 1 to 7, W represents a precoding matrix, and one TPMI index corresponds to one precoding matrix, or corresponds to one codeword. The rows in the codeword correspond to multiple transmitting antenna ports of the terminal device, and each column corresponds to the antenna ports used by the transmission layer in turn. For a column, if the element of a row is set to non-zero, it indicates the antenna port corresponding to the row. It is used to transmit the transmission layer corresponding to the column, and at the same time, different rows in the same column may indicate different values, which correspond to the phase weights of different antenna ports on the transmission layer.

Table 1

Table 1 shows the codebook for layer 1 transmission with 2 antenna ports, and there are 6 TPMI index values, including 0 to 5. The code words corresponding to the index values 0 and 1 are non-coherent type code words. Codewords corresponding to index values 2 to 5 are codewords of the fully coherent type. For example, the code word corresponding to TPMI0 indicates that layer 1 is used for current data transmission, and port 0 is used for transmission of this layer.

Table 2

Table 2 is a codebook for 2-antenna port 2-layer transmission, and there are 3 TPMI index values, including 0-2. The codeword corresponding to the index value 0 is a non-coherent type of codeword. The codewords corresponding to index values 1 and 2 are codewords of the fully coherent type. For example, the code word corresponding to TPMI0 indicates that: the current data transmission adopts 2 layers, the layer 1 transmission adopts port 0, and the layer 2 transmission adopts port 1.

table 3

Table 3 is a codebook for transmitting discrete Fourier transform spread orthogonal frequency division multiplexing (DFT spread OFDM, DFT-s-OFDM) waveforms at 4 antenna ports and 1 layer. There are 28 TPMI index values in total, including 0-27. The codewords corresponding to index values 0 to 3 are codewords of a non-coherent type. The codewords corresponding to the index values 4 to 11 are codewords of the partially coherent type. Codewords corresponding to index values 12 to 27 are codewords of the fully coherent type.

Table 4

Table 4 is a codebook of a cyclic prefix (cyclic prefix, CP)-OFDM waveform for 4-antenna port 1-layer transmission, and there are 28 TPMI index values in total, including 0-27. The codewords corresponding to index values 0 to 3 are codewords of a non-coherent type. The codewords corresponding to the index values 4 to 11 are codewords of the partially coherent type. Codewords corresponding to index values 12 to 27 are codewords of the fully coherent type.

table 5

Table 5 is a codebook for transmitting CP-OFDM waveforms with 4 antenna ports and 2 layers. There are 22 TPMI index values in total, including 0 to 21. Codewords corresponding to index values 0 to 5 are non-coherent type codewords. The codewords corresponding to index values 6 to 13 are codewords of the partially coherent type. Codewords corresponding to index values 14 to 21 are codewords of the fully coherent type.

Table 6

Table 6 is a codebook for 4-antenna port 3-layer transmission of CP-OFDM waveforms, and there are 7 TPMI index values, including 0-6. The codeword corresponding to the index value 0 is a non-coherent type of codeword. The codewords corresponding to the index values 1 to 2 are codewords of the partially coherent type. Codewords corresponding to index values 3 to 6 are codewords of the fully coherent type.

Table 7

Table 7 is a codebook for transmitting CP-OFDM waveforms with 4 antenna ports and 4 layers. There are 5 TPMI index values in total, including 0 to 4. The codeword corresponding to the index value 0 is a non-coherent type of codeword. The codewords corresponding to the index values 1 to 2 are codewords of the partially coherent type. Codewords corresponding to index values 3 to 4 are codewords of the fully coherent type.

The more ports the terminal supports, the greater the number of predefined codebooks. The representation of the codebook is processed in the form of a table, and can also be represented in other ways.

The following describes a mechanism for determining the transmit power of a terminal.

The terminal needs to determine the channel transmit power of the uplink transmission before the uplink transmission. Take PUSCH transmission as an example. In a possible implementation manner of the prior art (hereinafter referred to as prior art 1), the actual transmit power of the terminal uplink transmission is multiplied by the channel transmit power by the ratio of the number of non-zero antenna ports to the maximum number of antenna ports that the terminal can support. P _PUSCH,b,f,c (i,j,q _d ,l), where the ratio of the number of non-zero antenna ports n to the maximum number of antenna ports supported by the terminal is the power reduction factor, and the power reduction factor is equal to The ratio of the actual transmit power to the channel transmit power. The actual transmit power of the uplink transmission is the sum of the actual transmit powers of n non-zero antenna ports, where the n non-zero antenna ports are determined according to the TPMI indicated by the base station. Specifically, n is the number of rows that contain at least one non-zero element in the codeword corresponding to the TPMI. The obtained reduced channel transmit power is further divided equally among each non-zero antenna port, and the non-zero antenna port is determined according to the TPMI in the above Table 1-7. Taking Table 4 as an example, if the network device indicates TPMI 0, the number of non-zero antenna ports is 1, and the number of configured antenna ports is 4, then the actual PUSCH transmit power is 1/4P _PUSCH,b,f,c (i ,j,q _d ,l), the transmit power will be allocated to port 0; taking Table 5 as an example, if the network device indicates TPMI 0, the number of antenna ports for non-zero PUSCH transmission is 2, and the number of configured antenna ports is 4, then the actual PUSCH transmit power is 1/2P _PUSCH,b,f,c (i,j,q _d ,l), the transmit power will be allocated to port 0 and port 2, then the power on each antenna port is 1/4P _PUSCH,b,f,c (i,j,q _d ,l), if the network device indicates TPMI 7, the number of antenna ports for non-zero PUSCH transmission is 4, and the total number of configured antenna ports is 4 , then the actual PUSCH transmit power is P _PUSCH,b,f,c (i,j,q _d ,l), and the power on each antenna port is 1/4P _PUSCH,b,f,c (i,j, q _d ,l).

Wherein, the terminal determines the channel transmission power P _PUSCH,b,f,c (i,j,q _d ,l) according to the following formula:

where b is the bandwidth part (BWP) occupied by the physical uplink shared channel (PUSCH) transmission, f is the carrier occupied by the PUSCH transmission, and c is the serving cell ( serving cell), 1 is the power control parameter set configured by the network device through high-level signaling, and the parameter values configured by the following high-level signaling are all configured in this power control parameter set:

p _CMAX,f,c (i) is the maximum transmit power allowed by the communication system, that is, the maximum transmit power rated by the system. The maximum transmit power value can fluctuate up and down according to the protocol and the actual transmission channel conditions; the system rated The maximum transmit power of , can either represent the capability of the terminal equipment to transmit the maximum power supported by uplink data, or, in other words, the maximum transmit power that the terminal equipment can support. Optionally, the maximum transmit power may be the transmit power configured by the network device to the terminal device, which represents the maximum transmit power that the network device allows the terminal device to use. Optionally, the maximum transmission power may also be the maximum transmission power that the terminal device can use as agreed by the network device.

p _{O_PUSCH,b,f,c} (j) is the parameter value configured by the network device through the high-layer signaling. When the network device configures multiple parameter values through the high-layer, the terminal device further according to the downlink control information (downlink control information, DCI) The corresponding indication field is determined by selecting one of the multiple parameter values, or selecting one of the multiple parameter values according to a predefined rule to determine;

α _{a, b, c} (j) are the parameter values configured by the network device through high-layer signaling. When the network device configures multiple parameter values through the high-layer, the terminal device further according to the corresponding downlink control information (downlink control information, DCI) Instruct the field to select one of the multiple parameter values to determine, or select one of the multiple parameter values to determine according to a predefined rule;

是PUSCH所占的资源块(resource block，RB)数；

is the number of resource blocks (RBs) occupied by PUSCH;

PL _b,f,c (q _d ) is estimated based on the reference signal (reference resource, RS) configured by the network device;

其中，^K _S通过高层信令指示，BPRE的取值与码块(code block)数、码块大小、PUSCH所占的RE数相关，

与PUSCH上承载的数据类型相关；The value of _ΔTF,b,f,c (i) is related to the number of transmission layers, and can be related to the number of code blocks, the size of the code block, the number of REs occupied by the PUSCH, and the data type carried on the PUSCH. A calculation method of _ΔTF,b,f,c (i) is

Among them, ^K _S is indicated by high-level signaling, and the value of BPRE is related to the number of code blocks, the size of the code block, and the number of REs occupied by PUSCH,

Related to the type of data carried on PUSCH;

f _{b, f, c} (i, l) is determined according to the transmission power command (transmission power control, TPC) indication carried in the DCI. In the scenario where the TPC indicates the cumulant, f _{b, f, c} (i, l) = f _b,f,c (i _last ,l)+δ _PUSCH,b,f,c (i _last ,i,K _PUSCH ,l), in the scenario where TPC indicates absolute quantities, f _b,f,c (i ,l)=δ _PUSCH,b,f,c (i _last ,i,K _PUSCH ,l).

In prior art one, the terminal determines the transmit power used on each antenna port according to the channel transmit power and the number M of configured antenna ports. For example, the transmit power of each antenna port is the ratio of the channel transmit power to M. In actual uplink transmission, the actual number of antenna ports used to transmit uplink data may be less than or equal to M, and the actual transmit power represents the sum of transmit powers of the antenna ports actually used by the terminal when sending uplink data. Wherein, the actual transmit power is less than or equal to the channel transmit power. The determination method of the prior art 1 can be understood as performing a power reduction (scale) on the transmission power of the channel.

其中，当DCI指示完全相干码字时，β取值为：非零的PUSCH对应的天线/配置的天线；当DCI指示部分相干/非相干码字时，β取值为：非零的PUSCH对应的天线/配置的天线乘以2；当DCI指示非相干码字时，β取值为：非零的PUSCH对应的天线；现有技术二的效果是使得当TPMI指示部分相干/非相干对应的码字时，通过在上行PUSCH功控中增加发送天线之间的权重系数调整实际PUSCH的发送功率，以保证不同相干能力的终端的PUSCH最大发送功率不变。For the power control mechanism of the prior art, the total PUSCH transmit power is multiplied by the channel transmit power P _PUSCH,b,f,c (i,j,q _d ,l according to the ratio of the number of non-zero antenna ports to the number of configured antenna ports ), changed to:

Wherein, when DCI indicates a fully coherent codeword, the value of β is: the antenna corresponding to the non-zero PUSCH/configured antenna; when the DCI indicates a partial coherent/non-coherent codeword, the value of β is: corresponding to the non-zero PUSCH The antenna/configured antenna is multiplied by 2; when the DCI indicates a non-coherent codeword, the value of β is: the antenna corresponding to the non-zero PUSCH; the effect of the prior art 2 is that when the TPMI indicates a partially coherent/non-coherent corresponding When the code word is used, the actual PUSCH transmission power is adjusted by increasing the weight coefficient between the transmitting antennas in the uplink PUSCH power control, so as to ensure that the maximum PUSCH transmission power of terminals with different coherence capabilities remains unchanged.

即未经过功率缩减的发送功率。The channel transmit power mentioned in the embodiments of this application may be considered as the second prior art

That is, the transmit power without power reduction.

When the terminal transmits uplink data, it is necessary to first determine the channel transmit power of the uplink transmission. The present application can realize that the terminal uses the channel transmission power without power reduction to transmit uplink data. The maximum value of channel transmission power is the maximum output power on the frequency band occupied by the terminal for uplink transmission. In actual implementation, if the power classes of the terminal are defined, the channel transmit power should not be greater than the power class of the terminal, wherein the power class of the terminal can be adjusted according to the tolerance value. For example, as shown in Table 8, the power levels and tolerance values of terminals in different frequency bands are defined.

Table 8

After the adjustment of the tolerance value of the terminal, the maximum value of the channel transmission power of the terminal does not exceed the adjusted power level.

Taking the power level of the terminal as level 3 in Table 8 as an example, without considering the tolerance value, the power level of the terminal is 23dBm. The maximum value of the channel transmission power of the terminal may be determined to be 23 dBm or a value less than or greater than 23 dBm.

The antenna port of the terminal has the maximum transmit power according to the capability of the PA, and not the maximum transmit power of each antenna port of the terminal can support the maximum transmit power of the channel. When the maximum transmit power of the antenna port of the terminal is not greater than the maximum value of the channel transmit power, the terminal may use a method of virtualizing multiple antenna ports to achieve the maximum value of the channel transmit power.

In order to support the method of using the channel transmission power obtained by the terminal without power reduction for uplink transmission, the network device can indicate correct downlink control information for the terminal, a communication method is designed in this embodiment of the present application. The mechanism that the terminal adopts the power reduction mechanism can also be called the terminal adopts the full power transmission mechanism. The so-called full power transmission mechanism means that the terminal allocates the channel transmission power obtained without the power reduction mechanism to the antenna port of the terminal, and sends the uplink data to the network device. .

Based on the above description and the system architecture shown in FIG. 1 , as shown in FIG. 2 , the specific process of the communication method provided by the embodiment of the present application is as follows. Wherein, any two or more consecutive steps can constitute the scheme to be protected in the present application, and the remaining steps are optional steps. For example, the scheme composed of S201 to S202 is the protection scope of this application.

S201. The terminal determines capability indication information.

S202. The terminal sends capability indication information to the network device, and the network device receives the capability indication information from the terminal.

The capability indication information may be a capability representing whether the terminal transmit power can reach the rated maximum transmit power of the system, and the capability indication information may also represent a transmission mechanism or a power control mechanism that the terminal device supports full power transmission. Whether and how the terminal transmit power reaches the rated maximum transmit power of the system depends on the antenna architecture of the terminal for uplink transmission, such as the maximum transmit power of each PA. If there is a PA that reaches the system rated transmit power, the port corresponding to the PA will When it is used for uplink transmission, it can reach the rated maximum transmit power of the system, that is, the channel transmit power can be allocated to this port; and the way that the terminal implements uplink transmission, such as whether to support antenna virtualization into one antenna port, so as to connect multiple ports that cannot be used for uplink transmission. The transmit powers of the PAs that reach the system rated maximum transmit power are combined to form an antenna port that can reach the system rated maximum transmit power. Then, the capability indication information can also implicitly represent the antenna shape of the terminal's uplink transmission, or the transmission mode to realize full power transmission, so that the base station can select a reasonable TPMI and MCS.

Specifically, the capability indication information is used to determine the value of the power reduction factor. It can be understood that the actual value of the power reduction factor can be further indicated by the base station, and the capability indication information here is only used to determine the maximum value of the power reduction factor. value, or how it is calculated. This power reduction factor is used to determine the sum of the actual transmit power for the n non-zero antenna ports: the channel transmit power times the power reduction factor. The power reduction factor is determined according to the capability indication information, that is, the uplink transmission power is determined according to the power control mechanism that the terminal can support to realize full-power uplink transmission. Determining the power reduction factor may specifically be determining the value of the power reduction factor, or determining the calculation method of the power reduction factor, or determining the value range of the power reduction factor, specifically:

Value 1 (calculation method 1 or value range 1): the power reduction factor is directly determined to be 1, or the power reduction operation is removed from the step of determining the actual transmit power of each port by the terminal device, that is, each non-zero antenna The port can directly share the channel transmit power equally, and the power reduction factor value of 1 can make the actual transmit power of uplink transmission reach the rated maximum transmit power of the system, or achieve full power transmission. It should be understood that the actual transmit power of uplink transmission, Or the total actual transmit power is the sum of the actual transmit powers on each non-zero antenna port, when full power transmission is achieved, the sum of the actual transmit powers, or the actual transmit power of the uplink transmission is the channel transmit power. At this time, it means that the PAs configured by the terminal equipment can reach the rated maximum transmit power of the system, that is, the power reduction factor can be set to 1 for all codewords (in Table 1-7), or can support full power Transmission mechanism, in the present invention, a value of 1 corresponds to full power transmission. For example, when the number of non-zero antenna ports is 1, in the case of the value of the power reduction factor, the actual transmit power on the non-zero antenna port is the channel transmit power.

It should also be understood that due to device accuracy, the actual transmit power determined by the terminal device may be slightly different from the channel transmit power, that is, the actual transmit power may be slightly greater than the rated maximum transmit power of the system. The rated maximum transmit power of the system here is a reference for the terminal device to determine the maximum transmit power.

Value 2 (calculation method 2 or value range 2): the power reduction factor is equal to n/M, where n is the current number of non-zero antenna ports, and M is the number of SRS ports in the current SRS resource. n is determined according to the TPMI indicated in the DCI for scheduling uplink data, n is the number of matrix rows with non-zero elements in the precoding matrix corresponding to the TPMI, and a non-zero antenna port indicates that the antenna port is used for sending uplink data, or indicates that the The antenna port has non-zero power; when the network device configures only one SRS resource, the value of M is determined according to the number of SRS ports included in the SRS resource, that is, M is equal to the number of ports in the SRS resource; when the network device configures When multiple SRS resources are available, the value of M is determined according to the number of ports in the SRS resource indicated by the SRI in the DCI, that is, M is equal to the number of ports in the SRS resource. For example, for a terminal device supporting a maximum of 4 antenna ports, the base station can configure one 4-port SRS resource (numbered 0). At this time, if the DCI indicates a non-coherent codeword or a partially coherent codeword, the power reduction factor is equal to 1/ 4 or 1/2, the maximum transmission power of uplink data is 1/4 or 1/2 of the rated maximum transmission power of the system; if the base station is configured with a 1-port SRS resource (number 1) and a 2-port at the same time At this time, if the TPMI in the DCI indicates a non-coherent codeword or a partially coherent codeword and the SRI in the DCI indicates the SRS resource number 0, the power reduction factor is equal to 1/4 or 1/2 , then the maximum transmission power of uplink data is 1/4 or 1/2 of the rated maximum transmission power of the system; if the TPMI in the DCI indicates a non-coherent codeword or a partially coherent codeword and the SRI in the DCI indicates the SRS resource number 0 , then the power reduction factor is equal to 1/4 or 1/2, and the maximum transmission power of uplink data is 1/4 or 1/2 of the rated maximum transmission power of the system; if the SRI in the DCI indicates the SRS resource number 1, the power reduction If the factor is equal to 1, the transmission power of uplink data is equal to the channel transmission power, and the maximum transmission power is the maximum transmission power rated by the system; if SRI in DCI indicates SRS resource number 2 and indicates TPMI 0 or 1 (2-port codebook) , the power reduction factor is equal to 1/2, the transmission power of uplink data is equal to 1/2 of the channel transmission power, and the maximum transmission power is 1/2 of the maximum transmission power rated by the system. When TPMI2 is indicated, the power reduction factor is equal to 1, and the uplink The transmission power of data is equal to the transmission power of the channel, and the maximum transmission power is the rated maximum transmission power of the system. At this time, it means that the terminal device has a PA that cannot reach the maximum transmission power rated by the system, that is, the power reduction factor cannot be set to 1 for some codewords (in Table 1-7), or the full power transmission mechanism cannot be supported.

Value 3 (calculation method 3 or value range 3): The power reduction factor is equal to n/N, where n is the current number of non-zero antenna ports, and N is the maximum number of SRS ports that the terminal can support. The number of SRS ports is usually is the number of SRS ports in one SRS resource, and may also be the number of all SRS ports in one SRS resource set. At this time, regardless of the configuration or indication of the number of SRS ports in the SRS resource, for a terminal device with 4 antenna ports, when the DCI indicates a non-coherent codeword, the power reduction factor is 1/4. When some of the coherent codewords are desired, the power reduction factor is 1/2. For a terminal device with 2 antenna ports, when the DCI indicates a non-coherent codeword, the power reduction factor is 1/2. At this time, it means that the terminal device does not support the full power transmission mechanism.

Optionally, the capability indication information is used to indicate a codeword, which is referred to as the first codeword here for convenience of description. The first codeword is represented as an N×A matrix, and N×A indicates that the dimension of the matrix is N rows of A. column, where A and N are positive integers. It should be understood that the first codeword can be represented and stored in the form of an array, and each specific position in the array has specific elements. In this application, a row of the matrix/ Columns, various transformations can be just for the convenience of description. In actual implementation, the terminal can directly schedule certain elements in the array to form a specific set, and the specific set corresponds to the function of the first codeword. It should be understood that N may be reported by the terminal to the base station by other capability indication information different from the capability indication information.

Optionally, one or more codewords indicated by the capability indication information are represented as an N×A matrix, where A is the current number of transmission layers, when N=2, A takes the value 1, and when N= 4, the value of A is one or more of 1, 2 or 3;

The status bits of the capability indication information correspond to one or a group of codewords; or, the bits of the capability indication information correspond to one or a group of codewords.

Optionally, the one or more codewords indicated by the capability indication information include codeword group 1, and the codeword group 1 includes at least one of the following codewords:

其中，a的取值为1或者

和/或，

where a takes the value 1 or

and / or,

The one or more codewords indicated by the capability indication information include codeword group 2, and the codeword group 2 includes the following codewords:

其中，a的取值为1或者

b的取值为1，-1，j，-j中的至少一个。

where a takes the value 1 or

The value of b is at least one of 1, -1, j, and -j.

Optionally, the one or more codewords indicated by the capability indication information include one or more of a first codeword group, and the first codeword group includes at least one of the following codewords:

其中，a的取值为1或者0.5；和/或，

where a is 1 or 0.5; and/or,

The one or more codewords indicated by the capability indication information include one or more of the second codeword group, and the second codeword group includes at least one of the following codewords:

其中，a的取值为

或者0.5；和/或，

Among them, the value of a is

or 0.5; and/or,

The one or more codewords indicated by the capability indication information include one or more of a third codeword group, where the third codeword group includes at least one of the following codewords:

其中，a的取值为

或者0.5；和/或，

Among them, the value of a is

or 0.5; and/or,

其中，e、f、g的取值分别为1，-1，j，-j中的一个或者多个；和/或，The one or more codewords indicated by the capability indication information include one or more of a fourth codeword group, and the fourth codeword group includes

Wherein, the values of e, f, and g are respectively one or more of 1, -1, j, and -j; and/or,

The one or more codewords indicated by the capability indication information include a fifth codeword group, where the fifth codeword group includes at least one of the following codewords:

其中，b的取值为

或者2；和/或，

Among them, the value of b is

or 2; and/or,

The one or more codewords indicated by the capability indication information include a sixth codeword group, where the sixth codeword group includes at least one of the following codewords:

其中，c1和d1的取值分别为1，-1，j，-j中的一个或者多个；和/或，

Wherein, the values of c1 and d1 are one or more of 1, -1, j, and -j respectively; and/or,

The one or more codewords indicated by the capability indication information include a seventh codeword group, and the seventh codeword group includes the following codewords:

其中，e1、f1、g1、e2、f2、g2的取值为1，-1，j，-j中的一个或者多个，；和/或，

Wherein, the values of e1, f1, g1, e2, f2, and g2 are one or more of 1, -1, j, and -j; and/or,

The one or more codewords indicated by the capability indication information include an eighth codeword group, and the eighth codeword group includes the following codewords:

和/或，

and / or,

The one or more codewords indicated by the capability indication information include a ninth codeword group, and the ninth codeword group includes one or more of the following codewords:

和/或，

and / or,

The one or more codewords indicated by the capability indication information include a tenth codeword group, and the tenth codeword group includes one or more of the following codewords:

Optionally, the five status bits of the capability indication information respectively correspond to zero codewords, one codeword, two codewords, three codewords and four codewords in the first codeword group; or ,

The four bits of the capability indication information respectively correspond to the four codewords in the first codeword group; and/or,

One bit of the capability indication information corresponds to part or all of the codewords in the second codeword group; and/or,

One bit of the capability indication information corresponds to part or all of the codewords in the third codeword group; and/or,

One bit of the capability indication information corresponds to part or all of the codewords in the fourth codeword group; and/or,

One bit of the capability indication information corresponds to some or all of the codewords in the sixth codeword group; and/or,

One bit of the capability indication information corresponds to some or all of the codewords in the seventh codeword group; and/or,

One bit of the capability indication information corresponds to a codeword in the eighth codeword group; and/or,

One bit of the capability indication information corresponds to some or all of the codewords in the ninth codeword group; and/or,

One bit of the capability indication information corresponds to some or all of the codewords in the tenth codeword group; and/or,

The 2 bits of the capability indication information respectively correspond to the two codewords in the codeword group 1; and/or,

One bit of the capability indication information corresponds to one or more codewords in the codeword group 2 .

Optionally, the three codewords in the fifth codeword group correspond to three bits in the capability indication information respectively, wherein there are non-zeros in the three codewords in the fifth codeword group. codewords whose elements are located in the first, second, third, and fourth rows, respectively; or,

The fifth codeword group includes one or more of the following codeword sets:

The set of codewords respectively corresponds to a status bit of the capability indication information.

Optionally, when N=2, the maximum number of ports of the SRS is 2, and A=1.

Optionally, when N=4, the maximum number of ports of the SRS is 4, and the value of A is at least one of 1, 2, and 3.

It should be noted that the number of the first codewords is not necessarily one, and may be more than one.

Wherein, each row in the matrix corresponds to each antenna port of the terminal in turn, and may also sequentially correspond to the antenna ports in the configured SRS resources, or the antenna ports in the SRS resources indicated in the DCI, and each column in the matrix sequentially corresponds to each transport layer. In this embodiment of the present application, a non-zero antenna port may also be referred to as a non-zero power antenna port, and there are non-zero elements in the row corresponding to the non-zero antenna port. The row elements corresponding to zero antenna ports in the matrix are all zero elements. The codeword indicated by the capability indication information can be selected from Tables 1-7.

Optionally, the capability indication information can be in the form of a bitmap, that is, each bit of the capability indication information corresponds to a specific codeword, or corresponds to a group of specific codewords, when the terminal reports the capability indication information. When a certain bit position is 1, it means that the terminal device supports one or a group of codewords corresponding to this bit position for full power transmission. When a certain bit position is 0, it means that the terminal device does not support the one corresponding to the bit position. Or a set of codewords for full power transmission.

Optionally, the capability indication information may not be in the form of a bitmap, that is, the status bits of each capability indication information correspond to one or a group of specific codewords, and the terminal device can only select one from multiple status bits, that is, select the bitmap. One or a group of specific codewords corresponding to the status bits.

Optionally, the capability indication information may be partially in the form of a bitmap, that is, multiple codewords are grouped in advance, and the group is indicated by a bitmap, that is, each or a group of bits corresponds to a codeword group, when the one or a group of bits corresponds to a codeword group. When the group bit position is 0, the corresponding codeword group is not indicated, otherwise, the corresponding codeword group is indicated; and the group may not be indicated by bitmap, that is, the different binary values of the one or a group of bits indicate that Select some or all of the codewords from the corresponding codeword group.

Optionally, the capability indication information further includes the number of SRS ports. For example, the capability indication information includes n bits corresponding to whether an additional SRS resource needs to be configured when the maximum rank value is n. The number of SRS ports is less than the maximum number of SRS ports that the terminal device can support. For another example, the capability indication information further indicates that when the maximum rank value is n, the number of SRS resources that need to be additionally configured, each SRS resource may be 1 port, or the number of SRS ports that need to be additionally configured. The additionally configured SRS resources can enable the terminal to perform port virtualization, that is, a SRS port is a virtual port formed by virtualization of transmission links or PAs of multiple terminals.

可以支持满功率传输，则需要额外配置一个1端口的SRS资源，当能力指示信息中指示

可以支持满功率传输，则不需要额外配置一个1端口的SRS资源；或者，当能力指示信息中指示

可以支持满功率传输，则不需要额外配置一个1端口的SRS资源，也就是说，终端不需要配置多个不同端口的SRS资源；当能力指示信息中指示

可以支持满功率传输，则需要额外配置一个1端口的SRS资源，也就是说，终端需要配置多个不同端口的SRS资源，可选的，该多个不同端口的SRS资源位于同一个SRS资源集合内；或者，当能力指示信息中指示

和

均不可以支持满功率传输，则需要额外配置一个1端口的SRS资源，否则不需要额外配置一个1端口的SRS资源，也就是说，终端不需要配置多个不同端口的SRS资源。For another example, the bit indication corresponding to the first codeword group in the capability indication information is 0, or, the capability indication information indicates zero codewords in the first codeword group, indicating the codewords in the first codeword group can not support full power transmission, wherein, the first codeword group is the codeword used to indicate antenna port selection in the case of rank=1 when uplink transmission has a maximum of 4 antenna ports, then the above capability indication information indicates that in the case of rank=1 , at least one SRS resource needs to be additionally configured, and the number of SRS ports in the SRS resource is less than the maximum number of SRS ports that the terminal device can support. In a specific case, an additional 1-port SRS resource needs to be configured. For another example, the bit indication corresponding to the fifth codeword group in the capability indication information is 0, or, the capability indication information indicates zero codewords in the fifth codeword group, indicating the codewords in the fifth codeword group can not support full power transmission, wherein, the fifth codeword group is the codeword used to indicate the antenna port selection in the case of rank=2 when the uplink transmission has a maximum of 4 antenna ports, then the above capability indication information indicates that in the case of rank=2 , at least one additional SRS resource needs to be configured, and the number of SRS ports in the SRS resource is less than the maximum number of SRS ports that the terminal device can support. SRS resources. For another example, when the capability indication information indicates

Can support full power transmission, you need to configure an additional 1-port SRS resource, when the capability indication information indicates

It can support full power transmission, then there is no need to additionally configure a 1-port SRS resource; or, when the capability indication information indicates

It can support full-power transmission, so there is no need to configure an additional 1-port SRS resource, that is, the terminal does not need to configure SRS resources of multiple different ports; when the capability indication information indicates

If full power transmission can be supported, an additional 1-port SRS resource needs to be configured, that is, the terminal needs to configure SRS resources of multiple different ports. Optionally, the SRS resources of the multiple different ports are located in the same SRS resource set or, when indicated in the capability indication information

and

If neither can support full-power transmission, an additional 1-port SRS resource needs to be configured, otherwise there is no need to additionally configure a 1-port SRS resource, that is, the terminal does not need to configure multiple SRS resources with different ports.

The corresponding power control mechanism is described below with reference to scheme 1. The terminal determines the actual transmit power of the antenna port used to transmit PUSCH according to the reported capability indication information, that is, the actual transmit power of the non-zero antenna port. The reported capability indication information determines the actual transmit power, thereby determining the MCS and TPMI of the PUSCH. Specifically, an implementation manner is that when the terminal reports that the codeword supporting full power transmission is indicated by the DCI, the PUSCH scheduled by the DCI adopts full power transmission, that is, the transmission power of the PUSCH is the channel transmission power.

Optionally, the base station configures a codebook set, and specifies that when some of the codewords are indicated by DCI, the PUSCH is transmitted at full power, otherwise it is transmitted at non-full power, that is, the transmission power of the PUSCH is the channel transmission power multiplied by the power reduction factor. The specific determination method of the codeword set:

和

用于满功率传输时，所述码字集合包括：For the case of 2 antennas, when the terminal reports that it supports

and

When used for full power transmission, the codeword set includes:

或者，

当该集合内的码字被DCI指示时，PUSCH采用满功率传输；或者，

当该集合内

被DCI指示时，PUSCH采用满功率传输，否则采用非满功率传输。

or,

When the codewords in the set are indicated by DCI, the PUSCH is transmitted at full power; or,

when the set

When instructed by DCI, the PUSCH adopts full power transmission, otherwise, it adopts non-full power transmission.

或者

用于满功率传输时，以

为例，所述码字集合包括：When the terminal reports its support

or

When used for full power transmission, with

For example, the codeword set includes:

当

被DCI指示，则PUSCH采用满功率传输，否则采用非满功率传输；或者，所述码字集合包括：

或者

当

被DCI指示，则PUSCH采用满功率传输，否则采用非满功率传输；

when

Indicated by DCI, the PUSCH adopts full power transmission, otherwise it adopts non-full power transmission; or, the codeword set includes:

or

when

Indicated by DCI, the PUSCH adopts full power transmission, otherwise it adopts non-full power transmission;

或者

用于满功率传输时，所述码字集合包括：When the terminal reports that it does not support

or

When used for full power transmission, the codeword set includes:

当

被DCI指示，则PUSCH采用满功率传输，否则采用非满功率传输。

when

Indicated by DCI, the PUSCH adopts full power transmission, otherwise it adopts non-full power transmission.

For the case of 4 antennas, when the terminal reports that it supports all codewords in the first codeword group for full power transmission, the codeword set includes:

或者

or

被DCI指示，则相应PUSCH采用满功率传输，否则，采用非满功率传输。当终端上报其第一码字组中部分码字用于满功率传输，则，以终端上报

用于满功率传输为例，码字集合包括：when

Indicated by the DCI, the corresponding PUSCH adopts full power transmission, otherwise, adopts non-full power transmission. When the terminal reports part of the codewords in the first codeword group for full power transmission, the terminal reports

For full power transmission as an example, the codeword set includes:

当

被DCI指示，则PUSCH采用满功率传输，否则采用非满功率传输，或者，码字集合包括

当

被DCI指示，则相应PUSCH采用满功率传输，否则，采用非满功率传输。其余的码字组同理，也就是说，当终端上报本申请中其余码字组中部分码字用于满功率传输，当这些码字被DCI指示，则PUSCH采用满功率传输，否则采用非满功率传输。可选的，基站配置一个或者多个SRS资源，该SRS资源的天线端口数少于终端支持的最大天线端口数。比如，当一个支持2天线端口的终端设备通过能力指示信息上报其需要额外配置天线端口数为1的SRS资源，则基站可以基于该能力指示信息配置一个1天线端口的SRS资源，当DCI中指示该1端口的SRS资源时，表明采用满功率传输相应PUSCH，即PUSCH采用信道发送功率。

when

Indicated by DCI, the PUSCH adopts full power transmission, otherwise, it adopts non-full power transmission, or, the codeword set includes

when

Indicated by the DCI, the corresponding PUSCH adopts full power transmission, otherwise, adopts non-full power transmission. The same is true for the rest of the codeword groups, that is to say, when the terminal reports some codewords in the rest of the codeword groups in this application for full power transmission, when these codewords are indicated by DCI, the PUSCH uses full power transmission, otherwise the non- Full power transmission. Optionally, the base station configures one or more SRS resources, and the number of antenna ports of the SRS resources is less than the maximum number of antenna ports supported by the terminal. For example, when a terminal device supporting 2 antenna ports reports through the capability indication information that it needs to configure additional SRS resources with 1 antenna port, the base station can configure an SRS resource with 1 antenna port based on the capability indication information. When the 1-port SRS resource is used, it indicates that the corresponding PUSCH is transmitted with full power, that is, the PUSCH uses the channel transmission power.

或

时，表明采用满功率传输相应PUSCH，即PUSCH采用信道发送功率，且PUSCH的层数为1，若指示的TPMI为

则PUSCH采用满功率传输，且PUSCH的层数为2；或者基站可以基于该能力指示信息配置一个或者多个1天线端口的SRS资源，终端在该一个或者多个1天线端口的SRS资源上发送经过虚拟化的SRS端口，当DCI中指示该一个或者多个1天线端口的SRS资源，表明采用满功率传输相应PUSCH，若指示一个1天线端口的SRS资源，表明该PUSCH为1层传输，若指示两个1天线端口的SRS资源，表明该PUSCH为2层传输。结合能力指示信息，基站可以确定是否需要配置上述SRS资源以及SRS资源个数和端口数，具体为：对于最大4天线端口的终端设备，当其上报支持满功率传输能力，但不支持采用任意一个第一码字组支持满功率传输时，表明需要基站额外配置一个1端口或者2端口的SRS资源；或者，当终端通过能力指示信息上报其支持第一码字组中的某一个特定的码字，表明需要基站额外配置一个1端口或者2端口的SRS资源，特定的码字可以为

或者

上述上报方式可以对应终端设备不具备支持最大发送功率的PA。再比如，终端可以通过能力指示信息上报

或

和/或，

或

和/或，

或

同时，该信息还表明，终端不需要配置多个不同端口的SRS资源。上述上报方式可以对应终端设备具备至少一个支持最大发送功率的PA。When a terminal device supporting 4 antenna ports reports through the capability indication information that it needs to configure additional SRS resources whose number of antenna ports is less than the maximum number of antenna ports, such as 2, the base station can configure an SRS with 2 antenna ports based on the capability indication information resource, the terminal sends the virtualized SRS port on the SRS resource of the 2 antenna ports, when the SRS resource of the 2 ports is indicated in the DCI and the TPMI indication is

or

, it indicates that the corresponding PUSCH is transmitted with full power, that is, the PUSCH adopts the channel transmission power, and the number of layers of the PUSCH is 1. If the indicated TPMI is

Then the PUSCH adopts full power transmission, and the number of layers of the PUSCH is 2; or the base station can configure one or more SRS resources of 1 antenna port based on the capability indication information, and the terminal transmits on the SRS resources of the one or more 1 antenna ports After the virtualized SRS port, when the one or more SRS resources of the 1-antenna port are indicated in the DCI, it indicates that the corresponding PUSCH is transmitted at full power. Indicate the SRS resources of two 1-antenna ports, indicating that the PUSCH is a layer-2 transmission. Combined with the capability indication information, the base station can determine whether to configure the above-mentioned SRS resources and the number of SRS resources and ports, specifically: for a terminal device with a maximum of 4 antenna ports, when the report supports the full power transmission capability, it does not support the use of any one. When the first codeword group supports full power transmission, it indicates that the base station needs to configure an additional 1-port or 2-port SRS resource; or, when the terminal reports that it supports a specific codeword in the first codeword group through capability indication information , indicating that the base station needs to configure an additional 1-port or 2-port SRS resource, and the specific code word can be

or

The above reporting manner may correspond to that the terminal device does not have a PA that supports the maximum transmit power. For another example, the terminal may report the capability indication information

or

and / or,

or

and / or,

or

At the same time, the information also indicates that the terminal does not need to configure SRS resources of multiple different ports. The above reporting manner may correspond to that the terminal device has at least one PA that supports the maximum transmit power.

Optionally, the capability indication information further includes a separate bit to indicate whether the terminal supports full power transmission. When the terminal reports that it supports full power transmission through this bit, it indicates that any codeword belonging to its coherence capability can be used to support full power transmission, and it is not necessary to configure SRS resources of different SRS ports.

或

则表明需要额外配置一个1或2端口的SRS资源，也就是说，需要配置至少两个SRS资源的端口数不同。否则，当终端通过能力指示信息上报其支持第五码字组中的一个或者多个码字时，则表明不需要额外配置SRS资源，或者是不需要配置至少两个SRS资源的端口数不同；或者，当终端上报其支持第五码字组中除

或

之外的一个或者多个码字时，则表明不需要额外配置SRS资源，或者是不需要配置至少两个SRS资源的端口数不同。上述特定码字是示例性的，也可以是

或者，

Optionally, when the terminal reports through capability indication information that it does not support the use of any fifth codeword group to support the full power transmission mechanism, or when the terminal reports through capability indication information that it supports a specific codeword in the fifth codeword group, the A specific codeword can be,

or

It indicates that an additional 1- or 2-port SRS resource needs to be configured, that is, at least two SRS resources need to be configured with different numbers of ports. Otherwise, when the terminal reports that it supports one or more codewords in the fifth codeword group through the capability indication information, it indicates that there is no need to configure additional SRS resources, or that at least two SRS resources do not need to be configured with different port numbers; Or, when the terminal reports that it supports the division of the fifth codeword

or

When one or more codewords are not included, it indicates that there is no need to configure additional SRS resources, or it is not necessary to configure at least two SRS resources with different numbers of ports. The above-mentioned specific code words are exemplary and can also be

or,

或

支持满功率传输，则表明终端不能通过

或

和

或

支持满功率。若终端上报的能力指示信息中支持满功率传输的第五码字组中的全部码字对应非零端口数小于4，则表明终端可以通过

或

或者，

或

支持满功率传输。若终端上报的能力指示信息中支持满功率传输的第五码字组中的全部码字对应非零端口数为4，则表明终端可以通过

或

且

或

支持满功率传输。Optionally, for a terminal with partial coherence capability, in the capability indication information, when any codeword in the fifth codeword group cannot support full power transmission, or only when a specific codeword in the fifth codeword group, such as

or

If full power transmission is supported, it means that the terminal cannot pass

or

and

or

Full power is supported. If the number of non-zero ports corresponding to all codewords in the fifth codeword group supporting full power transmission in the capability indication information reported by the terminal is less than 4, it indicates that the terminal can pass

or

or,

or

Full power transmission is supported. If the number of non-zero ports corresponding to all codewords in the fifth codeword group supporting full power transmission in the capability indication information reported by the terminal is 4, it indicates that the terminal can pass

or

and

or

Full power transmission is supported.

Optionally, the number of bits of the capability indication information of the terminal with partial coherence capability and the terminal with non-coherent capability are the same; or, the set of codewords corresponding to each bit in the capability indication information of the terminal with partial coherence capability and the terminal with non-coherent capability same.

Optionally, the base station configures multiple SRS resources in one SRS resource set with different numbers of ports, wherein the multiple SRS resources may include an SRS resource equal to the maximum number of antenna ports indicated by the terminal; The SRS resource with the maximum number of antenna ports, or, includes a plurality of SRS resources less than the maximum number of antenna ports indicated by the terminal.

Optionally, when the codeword reported in the capability indication information is indicated, it indicates that the current PUSCH transmission adopts full power transmission, and at this time, the power reduction factor is 1; and/or, the number of ports is less than the SRS resource of the maximum number of antenna ports When indicated, it indicates that the transmission of the current PUSCH adopts full power transmission; and/or, when the SRS resource with a smaller number of ports in a plurality of SRS resources of an SRS resource set is indicated, it indicates that the transmission of the current PUSCH adopts full power transmission Transmission, at this time, the power reduction factor is 1, or n/M.

Optionally, the capability indication information is used to indicate the number of reference signal SRS ports that need to be additionally configured under a specific maximum transmission rank rank value, where the maximum rank refers to the maximum number of transmission layers or streams used for current data transmission. , that is, the rank indicated in the DCI or the number of DMRS ports indicated or the maximum value of the number of columns in the indicated precoding matrix. The maximum rank can be the value indicated by the terminal through a capability reporting information, or the base station can pass the high-level signaling configured value. The SRS (marked as the second SRS resource) that needs to be additionally configured is the number of SRS ports that need to be configured in addition to the maximum number of antenna ports that the terminal can support (marked as the first SRS resource). The number of ports is the maximum number of ports in one SRS resource that can be configured to be reported by the terminal, or the number of antennas configured by the terminal, or the maximum number of transmission layers supported by the terminal. The second SRS resource may include one or more SRS resources. Specifically, for a 2Tx terminal, the number of ports that support the second SRS resource may be reported as 0 or 1, or it may be reported whether the second SRS resource is supported to be configured, or it may be reported whether it supports different configurations within one SRS resource group Port SRS resources, such as configuring a 1-port SRS resource and a 2-port SRS resource, or two 1-port SRS resources. For a 4Tx terminal, the number of ports that can be reported supporting the second SRS resource is 1 and/or 2 and/or 3, that is, the reported number of ports of the SRS resource is less than the maximum number of antenna ports that the terminal can support. For example, only reporting the number of ports supporting the second SRS resource is 1, indicating that for PUSCH transmission with a (maximum) rank of 1, it is necessary to configure SRS resources with different numbers of SRS ports. For another example, reporting the number of ports supporting the second SRS resource is 1 and 2, indicating that for PUSCH transmission with a (maximum) rank of 1 or 2, SRS resources with different numbers of SRS ports need to be configured. For PUSCH transmission of 1, it is not necessary to configure SRS resources with different numbers of SRS ports, and for PUSCH transmission with (maximum) rank of 2, it is necessary to configure SRS resources with different numbers of SRS ports.

Optionally, the capability indication information is used to indicate whether the configuration of multiple SRS resources with different port numbers is supported when the maximum transmission rank value is x, where the value of x is one of 1, 2, and 3. one or more;

Optionally, the value of x can be one or more of 1, 2, and 3, that is, the terminal device can only report the number of SRS ports under the maximum rank=1, or report the maximum rank=1 and the maximum rank=2 respectively. The number of SRS ports under.

Optionally, the value of the x is {1} and/or {2} and/or {3}, that is, the terminal device can report the number of SRS ports under the maximum rank=1 or the SRS ports under the maximum rank=2 number or the number of SRS ports under the maximum rank=3.

Optionally, the terminal device may report the number of SRS ports under the maximum rank combination. Specifically, the value of x can be {1, 2}, which means the number of SRS ports under the maximum rank=1 and the maximum rank=2, that is, the terminal device can only report the number of SRS ports under the maximum rank=1 and the maximum rank=2 , or report the number of SRS ports under the maximum rank=1 and maximum rank=2, and report the number of SRS ports under the maximum rank=3; or the value of x can be {2,3}, which means that the maximum rank=2 and the maximum rank = The number of SRS ports under 3, that is, the terminal device can only report the maximum number of SRS ports under rank=2 and maximum rank=3, or report the number of SRS ports under maximum rank=2 and maximum rank=3, and simultaneously report the maximum number of SRS ports under rank=1 Number of SRS ports.

Optionally, the number of ports of the SRS is the number of ports in one SRS resource, or the number of ports in one SRS resource set, and the SRS resource set is used for uplink codebook transmission.

Optionally, the SRS resource or the SRS resource set is dedicated to the full power transmission mechanism, that is, the base station can configure the number of ports of the SRS resource at the same time as the maximum number of ports that the terminal can support, and configure the number of ports of another SRS resource at the same time as the capability. The number of SRS ports indicated by the indication information. The SRS resource or SRS resource set may carry function information configured by high-level signaling, indicating that it is used for the full power transmission mechanism, or the value of the power reduction factor corresponding to the SRS resource or SRS resource set is not the above-mentioned value of 3, or calculate The method is not the above calculation method 3.

The power control mechanism combined with scheme 2 is:

The base station configures one or more SRS resources, and the number of antenna ports of the SRS resources is less than the maximum number of antenna ports supported by the terminal. For example, when a terminal device supporting 2 antenna ports reports through the capability indication information that it needs to configure additional SRS resources with 1 antenna port, the base station can configure an SRS resource with 1 antenna port based on the capability indication information. When the 1-port SRS resource is used, it indicates that the corresponding PUSCH is transmitted with full power, that is, the PUSCH uses the channel transmission power.

或

时，表明采用满功率传输相应PUSCH且传输层数为1，即PUSCH采用信道发送功率，当DCI中指示该2端口的SRS资源且TPMI指示为

时，表明采用满功率传输相应PUSCH且传输层数为2，即PUSCH采用信道发送功率，且每个端口均分该信道发送功率；或者基站可以基于该能力指示信息配置一个或者多个1天线端口的SRS资源，终端在该一个或者多个1天线端口的SRS资源上发送经过虚拟化的SRS端口，当DCI中指示该一个或者多个1天线端口的SRS资源，表明采用满功率传输相应PUSCH，若指示一个1天线端口的SRS资源，表明该PUSCH为1层传输，若指示两个1天线端口的SRS资源，表明该PUSCH为2层传输。结合能力指示信息，基站可以确定是否需要配置上述SRS资源以及SRS资源个数和端口数。When a terminal device supporting 4 antenna ports reports through the capability indication information that it needs to configure additional SRS resources whose number of antenna ports is less than the maximum number of antenna ports, such as 2, the base station can configure an SRS with 2 antenna ports based on the capability indication information resource, the terminal sends the virtualized SRS port on the SRS resource of the 2 antenna ports, when the SRS resource of the 2 ports is indicated in the DCI and the TPMI indication is

or

When , it indicates that the corresponding PUSCH is transmitted with full power and the number of transmission layers is 1, that is, the PUSCH adopts the channel transmission power. When the SRS resources of the 2 ports are indicated in the DCI and the TPMI indication is

When , it indicates that the corresponding PUSCH is transmitted at full power and the number of transmission layers is 2, that is, the PUSCH adopts the channel transmission power, and each port equally divides the channel transmission power; or the base station can configure one or more 1-antenna ports based on the capability indication information the SRS resource, the terminal sends the virtualized SRS port on the SRS resource of the one or more 1-antenna ports, when the SRS resource of the one or more 1-antenna ports is indicated in the DCI, it indicates that the corresponding PUSCH is transmitted at full power, If one SRS resource of one antenna port is indicated, it indicates that the PUSCH is a layer 1 transmission, and if two SRS resources of one antenna port are indicated, it indicates that the PUSCH is a layer 2 transmission. Combined with the capability indication information, the base station can determine whether to configure the above-mentioned SRS resources and the number of SRS resources and the number of ports.

Optionally, when a terminal device supporting 4 antenna ports reports through the capability indication information that it needs to additionally configure SRS resources whose number of antenna ports is less than the maximum number of antenna ports, for example, 2, the base station can configure 2 SRS resources based on the capability indication information. The SRS resource of 1 antenna port, the terminal sends the virtualized SRS port on these 2 SRS resources, when one of the 2 SRS resources of 1 antenna port is indicated in the DCI, it indicates that the corresponding PUSCH is transmitted with full power and the transmission The number of layers is 1, that is, the PUSCH adopts the channel transmission power. When the two SRS resources are indicated in the DCI at the same time, it indicates that the corresponding PUSCH is transmitted at full power and the number of transmission layers is 2, that is, the PUSCH adopts the channel transmission power, and each port is equally divided. The channel transmit power.

Optionally, the capability indication information is used to indicate the value of the power reduction factor under a specific transmission rank rank value, or the calculation method of the power reduction factor, as described in the above-mentioned values 1-3 or calculation methods 1-3. described. The number of transmission layers or streams used for current data transmission indicated by the transmission rank rank, the terminal may determine the rank of the current data according to the rank indicated in the DCI or the indicated number of DMRS ports or the indicated number of columns in the precoding matrix.

Optionally, the value of x may be one or more of 1, 2, and 3, that is, the terminal device may only report the value of the power reduction factor under rank=1 or the calculation method of the power reduction factor, or report them separately. The value of the power reduction factor or the calculation method of the power reduction factor under rank=1 and rank=2.

Optionally, the value of x is {1} and/or {2} and/or {3}, that is, the terminal device may report the value of the power reduction factor under rank=1 or the calculation method of the power reduction factor , or the value of the power reduction factor under rank=2 or the calculation method of the power reduction factor, or the value of the power reduction factor under rank=3 or the calculation method of the power reduction factor.

Optionally, the terminal device may report the value of the power reduction factor under the rank combination or the calculation method of the power reduction factor. Specifically, the value of x can be {1, 2}, which means the value of the power reduction factor or the calculation method of the power reduction factor under rank=1 and rank=2, that is, the terminal device can only report rank=1 and rank The value of the power reduction factor or the calculation method of the power reduction factor under =2, or the value of the power reduction factor or the calculation method of the power reduction factor under rank=1 and rank=2, and the power reduction factor under rank=3 is reported at the same time The value of x or the calculation method of the power reduction factor; or the value of x can be {2,3}, which means the value of the power reduction factor or the calculation method of the power reduction factor under rank=2 and rank=3, that is, the terminal The device may only report the value of the power reduction factor or the calculation method of the power reduction factor under rank=2 and rank=3, or report the value of the power reduction factor or the calculation method of the power reduction factor under rank=2 and rank=3, At the same time, the value of the power reduction factor or the calculation method of the power reduction factor under rank=1 is reported.

Optionally, the value of the power reduction factor or the calculation method of the power reduction factor can be adopted only after the base station indicates activation through higher layer signaling or DCI.

Optionally, the capability indication information is used to indicate whether the first codeword can support a power reduction factor=1 under a specific transmission rank rank value, or whether the first codeword can support a full power transmission mechanism. Specifically, the first codeword is all codewords under the specific transmission rank, and further, the first codeword may be all codewords under the coherence capability that the terminal can support. The number of transmission layers or streams used for current data transmission indicated by the transmission rank rank, the terminal may determine the rank of the current data according to the rank indicated in the DCI or the indicated number of DMRS ports or the indicated number of columns in the precoding matrix.

Optionally, the first codeword may be all codewords of a coherence capability under the coherence capability that the terminal can support.

Optionally, the value of x can be one or more of 1, 2, and 3, that is, the terminal device can only report whether the power reduction factor under rank=1 is equal to 1, or report rank=1 and rank=2 respectively. Whether down is equal to 1.

Optionally, the value of x is {1} and/or {2} and/or {3}, that is, the terminal device can report whether the power reduction factor under rank=1 is equal to 1, or whether the power reduction factor under rank=2 is equal to 1. Whether the power reduction factor is equal to 1, or whether the power reduction factor at rank=3 is equal to 1.

Optionally, the terminal device may report whether the power reduction factor under the rank combination is equal to 1. Specifically, the value of x can be {1, 2}, which means whether the power reduction factor is equal to 1 under rank=1 and rank=2, that is, the terminal device can only report whether the power reduction factor under rank=1 and rank=2 equal to 1, or report whether the power reduction factor is equal to 1 under rank=1 and rank=2, and report whether the power reduction factor is equal to 1 under rank=3; or the value of x can be {2,3}, which means that rank= Whether the power reduction factor is equal to 1 under 2 and rank=3, that is, the terminal device can only report whether the power reduction factor is equal to 1 under rank=2 and rank=3, or whether the power reduction factor is equal to 1 under rank=2 and rank=3 , and report whether the power reduction factor is equal to 1 when rank=1.

Optionally, whether the power reduction factor is equal to 1 can be used only after the base station indicates activation through higher layer signaling or DCI.

或者

或者

或者

时，由于该终端的PA均不能达到传输功率为23dBm，则rank＝1应当上报功率缩减因子取值为2或3，然而对于任意rank＝2的码字该终端可以采用任意两个或者四个PA达到传输功率为23dBm，则rank＝2应当上报功率缩减因子取值为1。For example, in the terminal antenna configuration shown in FIG. 9, when rank=1, the value or calculation method of the power reduction factor is 2 or 3, that is, when the DCI indicates the codeword

or

or

or

, since the PA of the terminal cannot reach the transmission power of 23dBm, the rank=1 should report the power reduction factor as 2 or 3. However, for any codeword of rank=2, the terminal can use any two or four When the PA reaches the transmission power of 23dBm, then rank=2 should report the power reduction factor as 1.

Optionally, the terminal reports the value of the power reduction factor for different codeword types through the capability indication information.

Optionally, the terminal reports respectively the power reduction factor corresponding to the partially coherent type codeword and the power reduction factor corresponding to the non-coherent type codeword through the capability indication information. For example, the power reduction factor for reporting partial coherent codewords is 1, and the power reduction factor for reporting non-coherent codewords is 1/N, or the power reduction factor for reporting partial coherent codewords and non-coherent codewords is both 1.

或

用于支持rank为1的PUSCH满功率传输，对于4Tx的终端，

或

用于支持rank为1的PUSCH满功率传输，

或

用于支持rank为2的PUSCH满功率传输，

或

用于支持rank为3的PUSCH满功率传输。Optionally, for different ranks, the value of the power reduction factor and one or more codewords are reported respectively. For example, for rank equal to 1, the power reduction factor is 1 and the codeword supporting full power transmission is reported at the same time; for rank equal to 2, the power reduction factor is directly reported as 1 or 1/N. At the same time, it is stipulated in the protocol that when the power reduction factor is 1, the next specific codeword of the rank is predefined for full power transmission. For example, for a 2Tx terminal,

or

It is used to support PUSCH full power transmission with rank of 1. For 4Tx terminals,

or

Used to support PUSCH full power transmission with rank 1,

or

Used to support PUSCH full power transmission with rank of 2,

or

Used to support PUSCH full power transmission with rank of 3.

Optionally, the number of SRS ports is reported separately for different codeword types, and the codeword type is a non-coherent codeword or a partially coherent codeword.

或

用于支持rank为1的PUSCH满功率传输，对于4Tx的终端，

或

用于支持rank为1的PUSCH满功率传输，

或

用于支持rank为2的PUSCH满功率传输，

或

用于支持rank为3的PUSCH满功率传输。Optionally, for different ranks, the number of SRS ports and one or more codewords are reported respectively. For example, for a rank equal to 1, the SRS resource configuration that does not support the configuration of different ports is reported (or an additional SRS resource with a small number of ports is supported) and the codeword that supports full-power transmission is reported at the same time, or the SRS that supports the configuration of different ports is reported. Resource configuration. If the rank is equal to 2 or 3, the SRS resource configuration that does not support the configuration of different ports is reported, or the SRS resource configuration that supports the configuration of different ports is reported. When the terminal reports the SRS resource configuration that does not support the configuration of different ports, the next specific rank of the corresponding rank is pre-defined. The codeword is used for full power transmission, such as for 2Tx terminals,

or

It is used to support PUSCH full power transmission with rank of 1. For 4Tx terminals,

or

Used to support PUSCH full power transmission with rank 1,

or

Used to support PUSCH full power transmission with rank of 2,

or

Used to support PUSCH full power transmission with rank of 3.

Optionally, the following process may also be performed after S202.

For the terminal side, the terminal can determine the channel transmission power.

The channel transmit power is the transmit power of n non-zero antenna ports, that is, the channel transmit power is actually the sum of the transmit powers of n non-zero antenna ports. The channel transmit power is less than or equal to P, where the value of P is the maximum transmit power, that is, the maximum transmit power of the uplink channel allocated by the terminal. The specific explanation of the channel transmission power here is as described above, and details are not repeated here.

The n non-zero antenna ports are in one-to-one correspondence with n rows in the matrix, and each of the n rows contains one or more non-zero elements.

The terminal may also determine the transmit power of each non-zero antenna port according to the first codeword.

Wherein, the terminal can evenly distribute the channel transmit power to n non-zero antenna ports, and the transmit power on the zero antenna ports is correspondingly zero. In an optional embodiment, when the complete average cannot be achieved, for example, the value calculated by the bisection method is not an integer or an overly accurate complete average is not required, the average can be rounded or rounded up/down. way to distribute power.

It should be understood that the process of allocating power here may be a deterministic process, that is, determining the transmit power of each non-zero antenna port. The determination may be to determine part of the antenna ports or all non-zero antenna ports. In one embodiment, the allocated power may be directly the final transmit power of the port, or may be a power level or a power value to be sent, and a signal is sent according to the power level or the power value to be sent during transmission.

For the network device side, the network device determines that the power reduction factor of the first data is 1. The network device sends downlink control information DCI to the terminal; wherein, the DCI is used to schedule the first data, and the codeword used in the first data is the first bit of the capability indication information, which takes a value of 1 And the codeword in one or a group of codewords corresponding to the first bit.

Alternatively, the network device may send downlink control information according to the first codeword.

The downlink control information may be used to indicate an uplink transmission codeword, for example, a TPMI index.

In this application, it is assumed that the total number of antenna ports configured on the terminal is represented by M. M is an integer power of 2, and the relationship between the number of rows A in the matrix and the configured antenna ports M may be: A≤M. Of course, the relationship between the number n of non-zero antenna ports and M is: n≤M.

In practical applications, the terminal may use some or all of the M antenna ports to transmit uplink data. In practice, the antenna ports used for transmitting uplink data are the above-mentioned non-zero antenna ports.

After determining the transmit power of each non-zero antenna port, the terminal sends an uplink signal to the network device based on the determined transmit power on each antenna port. The uplink signal in this application may also be called uplink data, or the uplink signal includes the uplink signal. Data, such as uplink signals, are carried on the PUSCH. The network equipment receives the uplink signal from the terminal.

The following describes how the terminal acquires or determines the first codeword. According to the number of rows and columns of the first codeword, the terminal may select codewords from different codebooks. In a possible implementation manner, the terminal selects the first codeword from an existing TPMI codebook. For example, select from the codebooks shown in Tables 1 to 7 above. In this way, the flexibility of the existing TPMI indication can be maintained. The following is a detailed description of the following implementations according to the number of rows and columns of the matrix.

1. A=2, N=1, M=2 or M=4.

The matrix is 2 rows and 1 column, suitable for terminals with 2 or 4 antenna ports.

The first codeword may be determined from a first codebook. Specifically, an existing codeword is selected from the first codebook as the first codeword. The codewords included in the first codebook must meet the following characteristics. The first codebook includes the second codeword and/or the third codeword. The number of non-zero antenna ports represented by the second codeword is 1, and the number of non-zero antenna ports represented by the third codeword is 2. For example, the first codebook is the codebook shown in Table 1. The second codeword is a codeword whose TPMI index value is 0 or 1 in the codebook shown in Table 1. The third codeword is a codeword whose TPMI index values are 2 to 5 in the codebook shown in Table 1. This application only describes the features of the second codeword and the third codeword included in the first codebook, and does not limit the number of the second codeword and the number of the third codeword. For example, the first codebook may include multiple second codewords and multiple third codewords.

2. A=4, N=1, M=4.

The matrix has 4 rows and 1 column, and is suitable for terminals with 4 antenna ports.

The first codeword may be determined from a second codebook. Specifically, an existing codeword is selected from the second codebook as the first codeword. The codewords included in the second codebook must meet the following characteristics. The second codebook includes the fourth codeword, the fifth codeword and/or the sixth codeword. The number of non-zero antenna ports represented by the fourth codeword is 1, the number of non-zero antenna ports represented by the fifth codeword is 2, and the number of non-zero antenna ports represented by the sixth codeword is 4. For example, the second codebook is the codebook shown in Table 3. The fourth codeword is any codeword whose TPMI index value is 0-3 in the codebook shown in Table 3. The fifth codeword is any codeword whose TPMI index value is 4 to 11 in the codebook shown in Table 3. The sixth codeword is any codeword whose TPMI index value is 12 to 27 in the codebook shown in Table 3. This application only describes the features of the fourth codeword, the fifth codeword and the sixth codeword included in the second codebook, and does not limit the number of codewords. For example, the second codebook may include a plurality of fourth codewords, a plurality of fifth codewords and a plurality of sixth codewords.

3. A=4, N=2, M=4.

The matrix has 4 rows and 2 columns, and is suitable for terminals with 4 antenna ports.

The first codeword may be determined from a third codebook. Specifically, an existing codeword is selected from the third codebook as the first codeword. The codewords included in the third codebook must meet the following characteristics. The third codebook includes the seventh codeword, the eighth codeword, and/or the ninth codeword. The number of non-zero antenna ports represented by the seventh codeword is 2, the number of non-zero antenna ports represented by the eighth codeword is 4 and the number of non-zero elements of the eighth codeword is 4. The number of non-zero antenna ports represented by the ninth codeword is 4 and the number of non-zero elements of the ninth codeword is greater than 4 (eg, 8). For example, the third codebook is the codebook shown in Table 5. The seventh codeword is any codeword whose TPMI index value is 0-5 in the codebook shown in Table 5. The eighth codeword is any codeword whose TPMI index value is 6 to 13 in the codebook shown in Table 5. The ninth codeword is any codeword whose TPMI index value is 14 to 21 in the codebook shown in Table 5. This application only describes the features of the seventh codeword, the eighth codeword and the ninth codeword included in the third codebook, and does not limit the number of codewords. For example, the third codebook may include multiple seventh codewords, multiple eighth codewords, and multiple ninth codewords.

4. A=4, N=3, M=4.

The matrix has 4 rows and 3 columns, and is suitable for terminals with 4 antenna ports.

The first codeword may be determined from a fourth codebook. Specifically, an existing codeword is selected from the fourth codebook as the first codeword. The codewords included in the fourth codebook must meet the following characteristics. The fourth codebook includes the tenth codeword and/or the eleventh codeword. The number of non-zero antenna ports represented by the tenth codeword is three, the number of non-zero antenna ports represented by the eleventh codeword is four and the number of non-zero elements of the eleventh codeword is four. Alternatively, the number of non-zero antenna ports represented by the eleventh codeword is 4 and the number of non-zero elements of the eleventh codeword is greater than 4 (eg, 8). For example, the fourth codebook is the codebook shown in Table 6. The tenth codeword is the codeword whose TPMI index value is 0 in the codebook shown in Table 6. The eleventh codeword is any codeword whose TPMI index value is 1 to 6 in the codebook shown in Table 6. This application only describes the features of the tenth codeword and the eleventh codeword included in the fourth codebook, and does not limit the number of codewords. For example, the fourth codebook may include a plurality of tenth codewords and a plurality of eleventh codewords.

5. A=2, N=2, M=4.

The matrix has 2 rows and 2 columns, and is suitable for terminals with 4 antenna ports.

The first codeword may be determined from a fifth codebook. Specifically, an existing codeword is selected from the fifth codebook as the first codeword. The codewords included in the fifth codebook must meet the following characteristics. The fifth codebook includes the twelfth codeword and/or the thirteenth codeword. The number of non-zero antenna ports represented by the twelfth codeword is two and the number of non-zero elements of the twelfth codeword is two. The number of non-zero antenna ports represented by the thirteenth codeword is 2 and the number of non-zero elements of the thirteenth codeword is greater than 2 (eg, 4). For example, the fifth codebook is the codebook shown in Table 2. The twelfth codeword is a codeword whose TPMI index value is 0 in the codebook shown in Table 2. The thirteenth codeword is any codeword whose TPMI index value is 1-2 in the codebook shown in Table 2. This application only describes the features of the twelfth codeword and the thirteenth codeword included in the fifth codebook, and does not limit the number of codewords. For example, the fifth codebook may include a plurality of twelfth codewords and a plurality of thirteenth codewords.

In the fifth implementation, or in the case of A=2, N=1, and M=4 in the first implementation, the terminal also needs to send reference signals of (M/2) antenna ports to the network device , (M/2) is 2. The network device determines downlink control information according to the reference signals of the (M/2) antenna ports. Optionally, the reference signal resources of (M/2) antenna ports are defined in the protocol to be used to implement channel measurement for setting the power control mode. The set power control mode is a full power transmission mechanism, and the value of the channel transmission power in the set power control mode is less than or equal to P. The network device may determine the downlink control mode according to the reference signals of the (M/2) antenna ports, that is, determine the TPMI indication and the MCS measurement.

In a possible design, the first codeword may be added to the above-mentioned corresponding codebook, for example, the first codebook to the fifth codebook. Optionally, a codeword entry may be added on the basis of the original codebook, that is, the first codeword is added, and correspondingly, a state value of the first codeword is added to the DCI. Or alternatively, the codeword with the specified index in the original codebook may be set as the first codeword, and the original codeword with the specified index is removed. Correspondingly, the state value of the codeword indicating the specified index in the DCI is used to indicate the first codeword.

When the downlink control information sent by the network device to the terminal is used to indicate the first codeword, it means that the network device enables the full-power transmission mechanism, and the terminal can not reduce the channel transmission power, and allocate the channel transmission power to the first codeword according to the first codeword. on each non-zero antenna port. Of course, when implementing the full power transmission mechanism, the network device may also indicate codewords other than the first codeword in the codebook. The terminal may not reduce the channel transmit power, and allocate the channel transmit power to each non-zero antenna port according to the indicated codeword.

The optional implementation manner of the above method is further described in detail below. It is assumed that the number of antenna ports of the terminal is represented by M, the number of data layers for uplink transmission is represented by N or P, and P=N.

First, the codeword indicated by the capability indication information may be a matrix, and the number of rows and columns of the matrix is related to the number of antenna ports and the number of data layers of the terminal. For example, the size of the matrix may be M×N, which is denoted as the first matrix; the size of the matrix may also be (M/2)×P, which is denoted as the second matrix.

The M rows in the first matrix are in one-to-one correspondence with the M antenna ports, and the N columns in the first matrix are in one-to-one correspondence with the N data layers for uplink data transmission. One row in (M/2) rows of the second matrix corresponds to one antenna port or two antenna ports, and P columns in the second matrix correspond to P data layers of uplink data transmission one-to-one.

In one possible implementation, the first matrix and the second matrix may be determined from the codebook described above. Referring to the above, the codebook includes a plurality of codewords, and the codewords are used to indicate the precoding mode of each transmission port. In this application, a codeword is selected from the codebook as a function parameter of the terminal. Optionally, the capability indication information sent by the terminal may be a TPMI index value, or a codeword may be directly used as the capability indication information. Before uplink transmission, the terminal sends capability information of the terminal to the network device, and one of the capability information is the capability indication information sent by the terminal.

Since the meaning of the codeword indicated by the capability indication information is different from the meaning (or function) of the codeword in the traditional codebook, the codebook needs to be updated or modified. Optional way 1: add a codeword entry in the existing codebook, for example, add a TPMI index value of 6 in Table 1, where the TPMI index value 6 corresponds to the newly added codeword entry. The network device will add a status value corresponding to the newly added codeword entry in the DCI. When the state value is indicated in the DCI delivered by the network device to the terminal, it indicates that the network device enables the full power transmission mechanism. After receiving the DCI, the terminal confirms that the full power transmission mechanism is used according to the state value indicated by the DCI. The terminal does not perform power reduction, but directly allocates the confirmed channel transmission power to the antenna ports indicated by the non-zero elements in the first matrix or the second matrix. The method of adding codewords to the existing codebook may not change the flexibility of the existing TPMI indication.

Optional way 2: Replace a certain codeword in the existing codebook with the codeword indicated by the capability indication information. For example, the codeword with the lowest TPMI index value is fixedly replaced with the codeword indicated by the capability indication information. For example, the codeword corresponding to TPMI0 in Table 1 is replaced with the codeword indicated by the capability indication information. The network device still uses the state value of TPMI0 in the original codebook to indicate the codeword indicated by the capability indication information. When the state value is indicated in the DCI delivered by the network device to the terminal, it indicates that the network device enables the full power transmission mechanism. After receiving the DCI, the terminal confirms that the full power transmission mechanism is used according to the state value indicated by the DCI. The terminal does not perform power reduction, but directly allocates the confirmed channel transmission power to the antenna ports indicated by the non-zero elements in the first matrix or the second matrix. The second way can not increase the overhead of DCI signaling.

Option 3: Without changing the existing codebook structure, directly define the power control mechanism as: when the DCI indicates the state value corresponding to a specified codeword (for example, the codeword with the lowest TPMI index value), it indicates that the network device is enabled. Full power transfer mechanism. After receiving the DCI, the terminal confirms that the full power transmission mechanism is used according to the state value indicated by the DCI. The terminal does not perform power reduction, but directly allocates the confirmed channel transmission power to the antenna ports indicated by the non-zero elements in the first matrix or the second matrix. When the DCI indicates a state value other than the state value corresponding to the specified codeword, it indicates that the network device does not enable the full power transmission mechanism. That is, after the terminal determines the channel transmission power, the channel transmission power is reduced (multiplied by the power reduction factor) and then allocated to the antenna port indicated by the non-zero element. In this manner, the codeword or TPMI index value reported by the terminal only represents the implementation behavior of the terminal supporting full power.

Next, an optional manner of how the terminal allocates the channel transmit power according to the codeword will be described in detail.

The terminal allocates the channel transmit power to the antenna ports indicated by the non-zero elements in the first matrix, and determines that the transmit power on the antenna ports indicated by the 0 elements in the first matrix is zero. Wherein, if the first matrix includes multiple non-zero elements, the terminal may equally divide the channel transmission power to the antenna ports indicated by the non-zero elements in the first matrix.

The number of uplink transmission layers of the terminal may have one or more layers, and the number of columns N in the first matrix may be 1 or an integer greater than 1. In the first matrix, if N=1, then: if a column includes a non-zero element (ie, a non-zero row element), the terminal allocates the channel transmit power to the antenna port corresponding to the non-zero element. The uplink data is sent on the antenna port corresponding to the element; if a column includes multiple non-zero elements (ie, non-zero row elements), the terminal equally divides the channel transmission power to the antenna ports corresponding to the multiple non-zero elements, and uses the multiple non-zero elements. In a virtualized manner of multiple antenna ports corresponding to non-zero elements, uplink data is sent. If N is greater than 1, then: if any one of the N columns includes a non-zero element, the terminal equally divides the channel transmit power to the N antenna ports corresponding to the N non-zero elements, and uses a data layer to use 1/N times the channel transmit power to transmit uplink data; if any one of the N columns contains a number of non-zero elements, then on each data layer, 1/N times the channel transmit power is equally distributed to the For multiple non-zero elements, uplink data is sent by adopting a virtualized manner of multiple antenna ports corresponding to the multiple non-zero elements.

The optional manner in which the terminal allocates the channel transmit power according to the codeword will be further described in detail below with reference to specific application scenarios.

The antenna port of the terminal has the maximum transmit power according to the capability of the PA, and not the maximum transmit power of each antenna port of the terminal can support the channel transmit power. When the maximum transmit power of the antenna port of the terminal is not greater than the channel transmit power, the terminal may achieve the channel transmit power by virtualizing multiple antenna ports.

Taking the power level of the terminal as level 3 in Table 8 as an example, without considering the tolerance value, the power level of the terminal is 23dBm. For example, considering the tolerance value (+3), the power level of the terminal is adjusted to 26dBm. Assuming that the channel transmit power of the terminal is determined as P, optionally, P is 23 dBm or adjusted 26 dBm. In the following examples, the case where the tolerance value is not considered is taken as an example. The following is an example of the antenna form when the number of antenna ports of the terminal is 2 and 4. When the terminal supports 2 antenna ports, the 2 antenna ports are represented by port 0 and port 1 respectively, and the 4 antenna ports when the terminal supports 4 antenna ports are represented by port 0, port 1, port 2 and port 3 respectively. The maximum transmit power supported by the port includes 17dBm, 20dBm or 23dBm. Ports that support a maximum transmit power of 17dBm can transmit power of P/4; ports that support a maximum transmit power of 20dBm can transmit power of P/2; ports that support a maximum transmit power of 23dBm can transmit power of P.

Figures 3 to 5 show antenna forms that can be supported by a terminal with two antenna ports.

As shown in Figure 3, port 0 and port 1 respectively support a maximum transmit power of 20dBm. If the terminal wants to indicate the full power transmission mechanism, it can achieve channel transmission power (23dBm) transmission by virtualizing two antenna ports into one antenna port, that is, using two PAs to transmit at the same time for power combining to achieve 23dBm transmission.

As shown in Figure 4, port 0 and port 1 respectively support a maximum transmit power of 23dBm. If the terminal wants to indicate the full power transmission mechanism, it can achieve channel transmission power (23dBm) transmission through any antenna port.

As shown in Figure 5, port 0 supports a maximum transmit power of 20dBm, and port 1 supports a maximum transmit power of 23dBm. If the terminal wants to indicate the full power transmission mechanism, it can use port 1 to achieve channel transmission power (23dBm) transmission. It is also possible to achieve channel transmit power (23dBm) transmission by virtualizing two antenna ports into one antenna port, that is, using two PAs to transmit at the same time for power combining to achieve 23dBm transmission. For example, port 0 uses the transmit power of P/2, and port 1 uses the transmit power of P/2.

Fig. 6 to Fig. 11 show the antenna forms that can be finally supported by the 4-antenna port.

As shown in Figure 6, port 0 supports a maximum transmit power of 23dBm, and port 1, port 2, and port 3 respectively support a maximum transmit power of 17dBm. The terminal can use port 0 to achieve channel transmit power (23dBm) transmission.

As shown in Figure 7, port 0 and port 2 respectively support a maximum transmit power of 20dBm. Port 1 and Port 3 respectively support a maximum transmit power of 17dBm.

As shown in Figure 8, port 0, port 1, port 2, and port 3 all support a maximum transmit power of 17dBm, respectively.

As shown in Figure 9, port 0, port 1, port 2, and port 3 all support a maximum transmit power of 20dBm, respectively.

As shown in Figure 10, port 0, port 1, port 2, and port 3 all support a maximum transmit power of 23dBm, respectively.

As shown in Figure 11, port 0 and port 3 respectively support a maximum transmit power of 23dBm. Port 1 and Port 3 respectively support a maximum transmit power of 17dBm.

In order to support full power transmission, for the above-mentioned terminals with different antenna forms, the capability indication information that can be selected to be reported is as follows.

Table 1 shows the codebook of a terminal with 2-antenna port transmission layer number of 1. The terminal can select any one of the TPMI index values in Table 1 from 0 to 1, and the TPMI index value from 2 to 5. , as the capability indication information.

或者TPMI2：

作为能力指示信息，也可以直接上报码字

或者

作为能力指示信息。For example, the terminal can select TPMI0 in Table 1:

or TPMI2:

As capability indication information, codewords can also be reported directly

or

as capability indication information.

或者

作为能力指示信息，表示图4所示的天线形态的终端可以采用一个天线端口发送信道发送功率。图5所示的天线形态的终端可以选择表1中TPMI1作为能力指示信息，或者上报

作为能力指示信息，表示图5所示的天线形态的终端可以采用一个天线端口发送信道发送功率。在这两种情况下，终端将信道发送功率P分配给元素1所指示的一个天线端口上，向网络设备发送数据。网络设备接收到码字后，可以通过一个SRS端口上的信道估计MCS，可以基于一个天线端口选择下行能力指示信息中的TPMI。The terminal in the antenna form shown in Figure 4 can select TPMI0 or TPMI2 in Table 1 as the capability indication information, or report the codeword

or

As the capability indication information, the terminal representing the antenna form shown in FIG. 4 can use one antenna port to transmit channel transmit power. The terminal in the antenna form shown in FIG. 5 can select TPMI1 in Table 1 as the capability indication information, or report

As the capability indication information, the terminal representing the antenna form shown in FIG. 5 can use one antenna port to transmit channel transmit power. In both cases, the terminal allocates the channel transmit power P to one antenna port indicated by element 1, and transmits data to the network device. After the network device receives the codeword, the MCS can be estimated through the channel on one SRS port, and the TPMI in the downlink capability indication information can be selected based on one antenna port.

The terminals in the antenna form shown in FIG. 3 , FIG. 4 and FIG. 5 may select any one of the TPMI index values 2 to 5 in Table 1 as the capability indication information. For example, TPMI2 is selected as the capability indication information. Indicates that the terminal achieves channel transmit power by virtualizing two antenna ports into one antenna port. In this case, the terminal equally divides the channel power P to two antenna ports, and one antenna port carries the transmit power of P/2. After the network device receives the codeword, the MCS is determined by channel estimation on the two SRS ports.

Table 3 or Table 4 shows the codebook of the terminal with 4-antenna port transmission layer number of 1 layer. Taking Table 3 as an example, the terminal may select any one of TPMI index values 0-3, any one of TPMI index values 4-11, and any one of TPMI index values 12-27 in Table 3. The corresponding numbers of non-zero antenna ports are 1, 2, and 4, respectively.

TPMI4：

和TPMI13：

作为能力指示信息。等价的，也可以上报码字

或者

或者

作为能力指示信息。这两种上报方式的归一化因子或者幅度不同。For example, the terminal may select TPMI0 in Table 3:

TPMI4:

and TPMI13:

as capability indication information. Equivalent, you can also report codewords

or

or

as capability indication information. The normalization factors or amplitudes of these two reporting methods are different.

The terminals in the antenna forms shown in FIG. 6 , FIG. 10 and FIG. 11 may select any one of the TPMI index values 0 to 3 in Table 3 as the capability indication information. For example, TPMI0 is selected as the capability indication information. Indicates that the terminal can use one antenna port to transmit channel transmit power. In this case, the terminal allocates the channel transmit power P to one antenna port indicated by element 1, and transmits data to the network device. After the network device receives the codeword, the MCS can be estimated through the channel on one SRS port, and the TPMI in the downlink capability indication information can be selected based on one antenna port.

The terminals in the antenna forms shown in FIG. 7 , FIG. 9 , FIG. 10 and FIG. 11 may select any one of the TPMI index values in Table 3 from 4 to 11 as the capability indication information. For example, TPMI4 is selected as the capability indication information. Indicates that the terminal achieves channel transmit power by virtualizing two antenna ports into one antenna port. In this case, the terminal equally divides the channel power P between the two antenna ports indicated by the two non-zero elements, and one antenna port carries the transmit power of P/2. After the network device receives the codeword, the MCS is determined by channel estimation on the two SRS ports.

The terminals in the antenna forms shown in FIGS. 6 to 11 may select any one of the TPMI index values in Table 3 from 12 to 27 as the capability indication information. For example, TPMI13 is selected as the capability indication information. Indicates that the terminal achieves channel transmit power by virtualizing four antenna ports into one antenna port. In this case, the terminal equally divides the channel power P among 4 antenna ports, and one antenna port carries the transmit power of P/4. After the network device receives the codeword, it determines the MCS through channel estimation on the 4 SRS ports.

Table 5 shows the codebook of a terminal with 2-layer transmission layers for 4-antenna ports. The terminal may select any one of the TPMI index values from 0 to 5 in Table 5, and any one of the TPMI index values from 6 to 21. The corresponding numbers of non-zero antenna ports are 2 and 4, respectively.

和TPMI6：

作为能力指示信息。与上报TPMI1等价的，也可以上报码字

作为能力指示信息。这两种上报方式的归一化因子或者幅度不同。For example, the terminal may select TPMI1 in Table 5:

and TPMI6:

as capability indication information. Equivalent to reporting TPMI1, you can also report codewords

as capability indication information. The normalization factors or amplitudes of these two reporting methods are different.

The terminals in the antenna form shown in FIG. 7 , FIG. 9 , FIG. 10 and FIG. 11 may select any one of the TPMI index values 0 to 5 in Table 5 as the capability indication information. For example, TPMI1 is selected as the capability indication information. Indicates that on each data layer in Layer 2, the terminal can use one antenna port to transmit the channel transmit power, then the terminal equally divides the channel transmit power P between the two antenna ports indicated by element 1, and one antenna port carries P/2 transmit power to the network device. After the network device receives the codeword, the MCS is determined by channel estimation on the two SRS ports.

The terminals in the antenna forms shown in FIGS. 6 to 11 may select any one of the TPMI index values in Table 3 from 6 to 21 as the capability indication information. For example, TPMI6 is selected as the capability indication information. Indicates that the terminal achieves channel transmit power by virtualizing four antenna ports into one antenna port. In this case, the terminal divides the channel power P equally between 2 data layers, one data layer bears the power of P/2, and on each data layer, the power of P/2 is allocated to 2 antenna ports, one antenna The port carries the transmit power of P/4. After the network device receives the codeword, it determines the MCS through channel estimation on the 4 SRS ports.

The terminal with the antenna form shown in FIG. 6 to FIG. 11 may also report that it does not support the full power transmission mechanism in which the data layer is two layers. Considering that the precoding method is used to avoid inter-layer interference when the data layer is 2-layer transmission, but the phase weighting between incoherent antennas is not accurate, the most preferred method is to only expect the terminal to report the TPMI index value of 0 to 5. Any one of them (such as TPMI 1), in other cases, the terminal reports that it does not support the full power mechanism with the data layer as layer 2.

Table 6 shows the codebook of a terminal with 3-layer transmission layers for 4-antenna ports. The terminal may select a TPMI index value of 0 in Table 6 and any one of TPMI index values of 1 to 6. The corresponding numbers of non-zero antenna ports are 3 and 4, respectively.

和TPMI1：

作为能力指示信息。与上报TPMI0等价的，也可以上报码字：

作为能力指示信息。这两种上报方式的归一化因子或者幅度不同。For example, the terminal may select TPMI0 in Table 6:

and TPMI1:

as capability indication information. Equivalent to reporting TPMI0, the codeword can also be reported:

as capability indication information. The normalization factors or amplitudes of these two reporting methods are different.

The terminals with the antenna forms shown in FIG. 9 and FIG. 10 can all select the codeword whose TPMI index value is 0 in Table 6 as the capability indication information. Indicates that the terminal can use one antenna port to transmit the channel transmit power on each data layer in the three layers, then the terminal equally divides the channel transmit power P among the three antenna ports indicated by element 1, and one antenna port carries P/3 transmit power to the network device. After the network device receives the codeword, it determines the MCS through channel estimation on the 3 SRS ports.

The terminals in the antenna forms shown in FIG. 6 , FIG. 7 , FIG. 8 and FIG. 11 may select any one of the TPMI index values 1 to 6 in Table 6 as the capability indication information. For example, TPMI1 is selected as the capability indication information. The terminal equally divides the channel power P among 3 data layers, and one data layer bears the power of P/3. On each data layer, the terminal equally divides the power of P/3 to the ports indicated by non-zero elements. If there are multiple non-zero elements, the ports with multiple non-zero elements are virtualized into one port to transmit P/3 power. After the network device receives the codeword, it determines the MCS through channel estimation on the 4 SRS ports.

The terminal with the antenna form shown in FIG. 6 , FIG. 7 , FIG. 8 , and FIG. 11 can also report the full power transmission mechanism that does not support the 3-layer data layer. Considering that the data layer is 3-layer transmission, the inter-layer interference is avoided by the precoding method, but the phase weighting between the incoherent antennas is not accurate, so the most preferred method is to only expect the terminal to report the code with the TPMI index value of 0. In other cases, the terminal reports that the data layer does not support the full power mechanism of layer 3.

或者TPMI2：

作为能力指示信息，也可以直接上报码字

或者

作为能力指示信息。Optionally, the terminal with 4 antenna ports may also use the capability information reported by the foregoing 2 antenna ports. Specifically, the terminal may select any one of the TPMI index values from 0 to 1 in Table 1, and any one of the TPMI index values from 2 to 5, as the capability indication information. For example, the terminal can select TPMI0 in Table 1:

or TPMI2:

As capability indication information, codewords can also be reported directly

or

as capability indication information.

The terminal in the antenna form shown in FIG. 6 , FIG. 7 , FIG. 9 , FIG. 10 , and FIG. 11 can select any one of the TPMI index values in Table 1 from 0 to 1 as the capability indication information. After receiving the capability indication information, the network device determines that the terminal transmits the channel transmit power by virtualizing one antenna port or two antenna ports into one antenna port. In order to further determine whether the terminal adopts the mode of 1 antenna port or 2 antenna port virtualization, the network device instructs the terminal to send a 2-port SRS, wherein the 2-port SRS needs to be determined based on the codeword indicated by the capability indication information reported by the terminal. mode, the protocol will describe that the 2-port SRS resources are used for channel measurement of the full power transmission mechanism. A specific example of how the terminal sends 2-port SRS is as follows: For example, if the terminal with the antenna form shown in Figure 6 reports TPMI0 in Table 1, in the 2-port SRS, port 0 uses a 23dBm PA to send, and port 1 uses any one 17dBm PA transmission, the network device determines whether to use port 0 to transmit uplink data based on the measurement of the 2-port SRS; for example, if the terminal with the antenna form shown in Figure 7 reports TPMI0, then the 2-port SRS uses two ports for port 0. The 20dBm PA is sent after port virtualization, and port 1 is sent with any 17dBm PA. The network device determines whether to use port 0 to transmit uplink data based on the measurement of the 2-port SRS; If TPMI 2 is reported, then ports 0 and 1 in the 2-port SRS are sent with two 20dBm PAs respectively, and port 1 is sent with any 17dBm PA. The network device determines whether to use port 0 to transmit uplink based on the measurement of the 2-port SRS. data. Of course, for the terminals with the antenna forms shown in FIG. 6 , FIG. 7 , FIG. 8 , FIG. 9 , FIG. 10 and FIG. 11 , any one of the TPMI index values 2 to 5 in Table 1 can be selected as the capability indication information. According to the above-mentioned reporting method of selecting a matrix with 2 rows for 4 antenna ports, the terminal can further hide the implementation method of the antenna form of the terminal. By further measuring the SRS of the 2 ports, the network device can finally determine the TPMI and MCS of the uplink transmission more accurately.

Based on the same concept of the foregoing method embodiments, as shown in FIG. 12 , an embodiment of the present application further provides a communication apparatus 1200, where the communication apparatus 1200 is configured to perform the operations performed by the terminal in the foregoing communication method, or to perform the operations performed in the foregoing communication method. The operation performed by the network device. The communication device 1200 includes a processing unit 1201 and a communication unit 1202 . Wherein, when the communication apparatus 1200 is used to perform the operations performed by the terminal in the above communication method:

A communication unit 1202, configured to send capability indication information, where the capability indication information is used to indicate that the first codeword is represented as an A×N matrix, where A and N are positive integers;

a processing unit 1201, configured to determine channel transmit power, where the channel transmit power is the transmit power of n non-zero antenna ports;

The processing unit 1201 is further configured to determine, according to the first codeword, the transmit power of each of the non-zero antenna ports, where the n non-zero antenna ports are in one-to-one correspondence with n rows in the matrix , each of the n rows includes one or more non-zero elements, and the channel transmit power is less than or equal to P, where the value of P is the maximum transmit power.

Optionally, A≤M, n≤M, where M is the number of configured antenna ports, and M is an integer power of 2.

The A=2, the M=2 or the M=4, the N=1;

The processing unit 1201 is further configured to: determine the first codeword from the first codebook;

The first codebook includes a second codeword and/or a third codeword, the number of non-zero antenna ports represented by the second codeword is 1, and the number of non-zero antenna ports represented by the third codeword is 2.

Optionally, the A=4, the M=4, and the N=1;

The processing unit 1201 is further configured to: determine the first codeword from the second codebook;

The second codebook includes a fourth codeword, a fifth codeword and/or a sixth codeword, the number of non-zero antenna ports represented by the fourth codeword is 1, and the number of non-zero antenna ports represented by the fifth codeword is 1. The number of null antenna ports is 2, and the number of non-null antenna ports represented by the sixth codeword is 4.

Optionally, the A=4, the M=4, and the N=2;

The processing unit 1201 is further configured to: determine the first codeword from the third codebook;

Wherein, the third codebook includes a seventh codeword, an eighth codeword and/or a ninth codeword, and the number of non-zero antenna ports represented by the seventh codeword is 2; The number of zero antenna ports is 4 and the number of non-zero elements of the eighth codeword is 4, or, the number of non-zero antenna ports represented by the ninth codeword is 4 and the number of non-zero elements of the ninth codeword is 4. The number is greater than 4.

Optionally, the A=4, the M=4, and the N=3;

The processing unit 1201 is further configured to: determine the first codeword from the fourth codebook;

Wherein, the fourth codebook includes a tenth codeword and/or an eleventh codeword, the number of non-zero antenna ports represented by the tenth codeword is 3; the number of non-zero antenna ports represented by the eleventh codeword is 3; is 4 and the number of non-zero elements of the eleventh codeword is 4, or, the number of non-zero antenna ports represented by the eleventh codeword is 4 and the number of non-zero elements of the eleventh codeword is 4 The number is greater than 4.

Optionally, the A=2, the M=4, and the N=2;

The processing unit 1201 is further configured to: determine the first codeword from the fifth codebook;

Wherein, the fifth codebook includes a twelfth codeword and/or a thirteenth codeword, the number of non-zero antenna ports represented by the twelfth codeword is 2, and the non-zero elements of the twelfth codeword are The number of is 2; the number of non-zero antenna ports represented by the thirteenth codeword is 2 and the number of non-zero elements of the twelfth codeword is greater than 2.

Optionally, the communication unit 1202 is also used for:

Reference signals for (M/2) antenna ports are transmitted.

Optionally, the reference signal is used to set the power control mode, and the value of the transmit power of the channel in the set power control mode is less than or equal to P.

Optionally, the communication unit 1202 is further configured to receive control information, where the control information is used to indicate the first codeword.

Optionally, the uplink signal is carried on the physical uplink shared channel PUSCH.

When the communication apparatus 1200 is used to perform the operation performed by the network device in the above communication method, the processing unit 1201 controls the communication unit 1202 to perform the following steps:

receiving capability indication information, where the capability indication information is used to indicate that the first codeword is represented as an A×N matrix, where A and N are positive integers;

According to the first codeword, downlink control information is sent.

Optionally, the A=2, the M=4, and the N=1; or, the A=2, the M=4, and the N=2;

The communication unit 1202 is further configured to receive reference signals of the (M/2) antenna ports, and the processing unit 1201 is further configured to determine the downlink control information according to the reference signals of the (M/2) antenna ports.

Optionally, the reference signal is used to set the power control mode, and the value of the uplink channel transmit power in the set power control mode is less than or equal to P, where P is the maximum uplink transmit power.

Optionally, the communication unit 1202 is further configured to send control information, where the control information is used to indicate the first codeword.

Based on the same concept as the above communication method, as shown in 13, an embodiment of the present application further provides a communication apparatus 1300, where the communication apparatus 1300 is configured to perform the operation performed by the network device in the foregoing method embodiment, or to perform the foregoing method Operations performed by the terminal in the embodiment. The communication device 1300 includes: a transceiver 1301 , a processor 1302 , and a memory 1303 . Memory 1303 is optional. The memory 1303 is used to store programs executed by the processor 1302 . When the communication device 1300 is used to implement the operations performed by the terminal in the above method embodiments, the processor 1302 is used to invoke a set of programs, and when the programs are executed, the processor 1302 is used to perform the operations performed by the terminal in the above method embodiments.

A processor 1302, configured to send capability indication information, where the capability indication information is used to indicate that the first codeword is represented as an A×N matrix, where A and N are positive integers;

The processor 1302 is further configured to determine channel transmit power, where the channel transmit power is the transmit power of n non-zero antenna ports;

The processor 1302 is further configured to determine, according to the first codeword, the transmit power of each of the non-zero antenna ports, where the n non-zero antenna ports are in one-to-one correspondence with n rows in the matrix , each of the n rows includes one or more non-zero elements, and the channel transmit power is less than or equal to P, where the value of P is the maximum transmit power.

Optionally, A≤M, n≤M, where M is the number of configured antenna ports, and M is an integer power of 2.

The A=2, the M=2 or the M=4, the N=1;

The processor 1302 is further configured to: determine the first codeword from the first codebook;

The first codebook includes a second codeword and/or a third codeword, the number of non-zero antenna ports represented by the second codeword is 1, and the number of non-zero antenna ports represented by the third codeword is 2.

Optionally, the A=4, the M=4, and the N=1;

The processor 1302 is further configured to: determine the first codeword from the second codebook;

The second codebook includes a fourth codeword, a fifth codeword and/or a sixth codeword, the number of non-zero antenna ports represented by the fourth codeword is 1, and the number of non-zero antenna ports represented by the fifth codeword is 1. The number of null antenna ports is 2, and the number of non-null antenna ports represented by the sixth codeword is 4.

Optionally, the A=4, the M=4, and the N=2;

The processor 1302 is further configured to: determine the first codeword from the third codebook;

Wherein, the third codebook includes a seventh codeword, an eighth codeword and/or a ninth codeword, and the number of non-zero antenna ports represented by the seventh codeword is 2; The number of zero antenna ports is 4 and the number of non-zero elements of the eighth codeword is 4, or, the number of non-zero antenna ports represented by the ninth codeword is 4 and the number of non-zero elements of the ninth codeword is 4. The number is greater than 4.

Optionally, the A=4, the M=4, and the N=3;

The processor 1302 is further configured to: determine the first codeword from the fourth codebook;

Wherein, the fourth codebook includes a tenth codeword and/or an eleventh codeword, the number of non-zero antenna ports represented by the tenth codeword is 3; the number of non-zero antenna ports represented by the eleventh codeword is 3; is 4 and the number of non-zero elements of the eleventh codeword is 4, or, the number of non-zero antenna ports represented by the eleventh codeword is 4 and the number of non-zero elements of the eleventh codeword is 4 The number is greater than 4.

Optionally, the A=2, the M=4, and the N=2;

The processor 1302 is further configured to: determine the first codeword from the fifth codebook;

Wherein, the fifth codebook includes a twelfth codeword and/or a thirteenth codeword, the number of non-zero antenna ports represented by the twelfth codeword is 2, and the non-zero elements of the twelfth codeword are The number of is 2; the number of non-zero antenna ports represented by the thirteenth codeword is 2 and the number of non-zero elements of the twelfth codeword is greater than 2.

Optionally, the transceiver 1301 is also used for:

Reference signals for (M/2) antenna ports are transmitted.

Optionally, the reference signal is used to set the power control mode, and the value of the transmit power of the channel in the set power control mode is less than or equal to P.

Optionally, the transceiver 1301 is further configured to receive control information, where the control information is used to indicate the first codeword.

Optionally, the uplink signal is carried on the physical uplink shared channel PUSCH.

When the communication apparatus 1300 is used to implement the operations performed by the network device in the above method embodiments, the processor 1302 is used to invoke a set of programs, and when the programs are executed, the processor 1302 is configured to execute the operations performed by the network devices in the above method embodiments. operate. Specifically, the processor 1302 controls the transceiver 1301 to execute:

receiving capability indication information, where the capability indication information is used to indicate that the first codeword is represented as an A×N matrix, where A and N are positive integers;

According to the first codeword, downlink control information is sent.

Optionally, the A=2, the M=4, and the N=1; or, the A=2, the M=4, and the N=2;

The transceiver 1301 is further configured to receive reference signals of (M/2) antenna ports, and the processing unit 1201 is further configured to determine the downlink control information according to the reference signals of the (M/2) antenna ports.

Optionally, the reference signal is used to set the power control mode, and the value of the uplink channel transmit power in the set power control mode is less than or equal to P, where P is the maximum uplink transmit power.

Optionally, the transceiver 1301 is further configured to send control information, where the control information is used to indicate the first codeword.

The functional module communication unit 1202 in FIG. 12 can be implemented by the transceiver 1301 , and the processing unit 1201 can be implemented by the processor 1302 .

The processor 1302 may be a central processing unit (central processing unit, CPU), a network processor (network processor, NP), or a combination of CPU and NP.

The processor 1302 may further include hardware chips. The above hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD) or a combination thereof. The above-mentioned PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a generic array logic (GAL) or any combination thereof.

The memory 1303 may include volatile memory (volatile memory), such as random-access memory (RAM); the memory 1303 may also include non-volatile memory (non-volatile memory), such as flash memory (flash memory) ), a hard disk drive (HDD) or a solid-state drive (SSD); the memory 1303 may also include a combination of the above-mentioned types of memory.

In the communication methods provided by the above embodiments of the present application, some or all of the operations and functions performed by the described network devices and terminals may be performed by chips or integrated circuits.

In order to implement the function of the apparatus described in FIG. 12 or FIG. 13 , an embodiment of the present application further provides a chip, including a processor, for supporting the communication apparatus 1200 and the communication apparatus 1300 to implement the terminal in the method provided in the foregoing embodiment. and functions involved in network equipment. In a possible design, the chip is connected to a memory or the chip includes a memory for storing necessary program instructions and data for the device.

Embodiments of the present application provide a computer storage medium storing a computer program, where the computer program includes instructions for executing the communication methods provided by the foregoing embodiments.

The embodiments of the present application provide a computer program product containing instructions, which, when run on a computer, cause the computer to execute the communication methods provided by the above embodiments.

As will be appreciated by those skilled in the art, the embodiments of the present application may be provided as a method, a system, or a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the present application. It will be understood that each flow and/or block in the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to the processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing device to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing device produce Means for implementing the functions specified in a flow or flow of a flowchart and/or a block or blocks of a block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions The apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.

These computer program instructions can also be loaded on a computer or other programmable data processing device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process such that The instructions provide steps for implementing the functions specified in the flow or blocks of the flowcharts and/or the block or blocks of the block diagrams.

While the preferred embodiments of the present application have been described, additional changes and modifications to these embodiments may occur to those skilled in the art once the basic inventive concepts are known. Therefore, the appended claims are intended to be construed to include the preferred embodiment and all changes and modifications that fall within the scope of this application.

Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present application without departing from the spirit and scope of the embodiments of the present application. Thus, if these modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims (31)

1. a communication method, is characterized in that, comprises: Determine the capability indication information, the capability indication information is used to determine the power reduction factor, the power reduction factor is the ratio of the actual transmit power sum of the n non-zero antenna ports to the channel transmit power, when the codeword reported in the capability indication information When instructed to be used for PUSCH transmission, the power reduction factor is 1, the maximum value of the channel transmission power is the maximum transmission power rated by the system, and n is a positive integer; The capability indication information is used to indicate one or more codewords; Send the capability indication information. 2. The method according to claim 1, wherein the power reduction factor comprises: one or more of n/M, n/N or 1, wherein n is a positive integer less than or equal to M, and M is the number of ports of the reference signal and M is a positive integer less than or equal to N, where N is the maximum number of transmission ports that the terminal can support, and N is a positive integer. 3. The method according to claim 1 or 2, wherein one or more codewords indicated by the capability indication information are represented as an N×A matrix, where A is the current transmission layer number, and when N= When 2, the value of A is 1, and when N=4, the value of A is one or more of 1, 2 or 3; The status bits of the capability indication information correspond to one or a group of codewords; or, the bits of the capability indication information correspond to one or a group of codewords. 4. The method according to claim 1 or 2, wherein the one or more codewords indicated by the capability indication information comprise codeword group 1, and the codeword group 1 comprises at least one of the following codewords :

where a takes the value 1 or

and / or, The one or more codewords indicated by the capability indication information include codeword group 2, and the codeword group 2 includes the following codewords:

Among them, the value of b is at least one of 1, -1, j, and -j. 5. The method according to claim 1 or 2, wherein the one or more codewords indicated by the capability indication information comprise one or more of a first codeword group, the first codeword group Include at least one of the following codewords:

Among them, the value of a is 1 or 2; or, The one or more codewords indicated by the capability indication information include one or more of the second codeword group, and the second codeword group includes the following codewords:

Among them, the value of b is

or 2; or, The one or more codewords indicated by the capability indication information include one or more of a third codeword group, where the third codeword group includes the following codewords:

Among them, the value of b is

or 2; or, The one or more codewords indicated by the capability indication information include one or more of a fourth codeword group, and the fourth codeword group includes

Wherein, the values of e, f, and g are respectively one or more of 1, -1, j, and -j; or, The one or more codewords indicated by the capability indication information include a fifth codeword group, where the fifth codeword group includes at least one of the following codewords:

Among them, the value of b is

or 2; or, The one or more codewords indicated by the capability indication information include a sixth codeword group, where the sixth codeword group includes at least one of the following codewords:

Wherein, the values of c1 and d1 are one or more of 1, -1, j, and -j respectively; or, The one or more codewords indicated by the capability indication information include a seventh codeword group, and the seventh codeword group includes the following codewords:

Among them, the value of e1, f1, g1, e2, f2, g2 is one or more of 1, -1, j, -j; or, The one or more codewords indicated by the capability indication information include an eighth codeword group, and the eighth codeword group includes the following codewords:

or, The one or more codewords indicated by the capability indication information include a ninth codeword group, and the ninth codeword group includes one or more of the following codewords:

or, The one or more codewords indicated by the capability indication information include a tenth codeword group, and the tenth codeword group includes one or more of the following codewords:

6. The method of claim 5, wherein The five status bits of the capability indication information respectively correspond to zero codewords, one codeword, two codewords, three codewords and four codewords in the first codeword group; or, The four bits of the capability indication information respectively correspond to the four codewords in the first codeword group; or, One bit of the capability indication information corresponds to part or all of the codewords in the second codeword group; or, One bit of the capability indication information corresponds to part or all of the codewords in the third codeword group; or, One bit of the capability indication information corresponds to part or all of the codewords in the fourth codeword group; or, One bit of the capability indication information corresponds to part or all of the codewords in the sixth codeword group; or, One bit of the capability indication information corresponds to some or all of the codewords in the seventh codeword group; or, One bit of the capability indication information corresponds to a codeword in the eighth codeword group; or, One bit of the capability indication information corresponds to some or all of the codewords in the ninth codeword group; or, One bit of the capability indication information corresponds to some or all of the codewords in the tenth codeword group; or, The two bits of the capability indication information respectively correspond to the two codewords in the codeword group 1; or, One bit of the capability indication information corresponds to one or more codewords in the codeword group 2 . 7. The method of claim 5, wherein, The three codewords in the fifth codeword group respectively correspond to the three bits in the capability indication information, wherein, in the three codewords in the fifth codeword group, there are non-zero elements located in the Codewords for one line, second line, third line, and fourth line; or, The fifth codeword group includes one or more of the following codeword sets:

The set of codewords respectively corresponds to a status bit of the capability indication information. 8. The method according to any one of claims 1-7, wherein when the first bit of the capability indication information takes a value of 1 and the first bit corresponds to one or a group of codewords When the codeword in is indicated by DCI, the power reduction factor of the first data is 1, where the first data is scheduled by the DCI. 9. The method according to any one of claims 1-7, wherein when the first bit of the capability indication information is 0 and the first bit corresponds to one or a group of codewords When the codeword in is indicated by DCI, the power reduction factor of the first data is n/M, or n/N, where the first data is scheduled by the DCI. 10. The method according to any one of claims 1-7, wherein the capability indication information is used to indicate one or more codewords, and, when the maximum transmission rank value is x, the number of ports of the reference signal SRS, It is characterized in that, when the capability indication information indicates zero codewords in the first codeword group, or when the bits corresponding to the first codeword group in the capability indication information are all set to 0 , when the maximum transmission rank is 1, the number of ports of the reference signal SRS is an integer greater than or equal to 1; and/or, When the bits corresponding to the fifth codeword group in the capability indication information are all set to 0, and when the maximum transmission rank rank is 2, the number of ports of the SRS is an integer greater than or equal to 2. 11. The method of claim 4, wherein when the capability indication information corresponds to

When the bit position of the SRS is 1, the port number of the SRS is 1; or, when the capability indication information corresponds to

When the bit position of 1 is 1, the port number of the SRS is 1. 12. The method according to claim 1-2, wherein the value of x is {1}, {2} and/or {3}; or, the value of x is {1, 2} and/or {3}; or, the value of x is {1} and/or {2,3}. 13. The method according to claim 1, 2 or 9, wherein the value of the power reduction factor of the first data is determined to be n/M or 1, wherein the transmission port of the first data is determined according to the first data. One SRS is determined, and the number of ports of the first SRS is the number of ports of the reference signal SRS indicated by the capability indication information. 14. The method of claim 13, wherein the SRS resource set includes multiple SRS resources, the SRS resources in the multiple SRS resources have different port numbers, and there is at least one SRS resource in the SRS resource set The number of ports of the resource is the same as the number of ports of the SRS indicated by the capability indication information, or the sum of the number of ports of some SRS resources in the SRS resource set is the same as the number of ports of the SRS indicated by the capability indication information. The method according to claim 1, 2, 12 or 13, wherein the number of ports of the SRS is less than N, or the type of the SRS is virtualization. 16. The method according to any one of claims 1-15, wherein the value of x is {2} and/or {3} and/or {2,3}, and the capability indication information It is also used to indicate one or more codewords, A=1 of the one or more codewords; or, the value of the x is {1} and/or {1,2} and/or {2} , the capability indication information is also used to indicate one or more codewords, A=3 of the one or more codewords; or, the value of the x is {1}, the capability indication information is also used To indicate one or more codewords, A=2 and/or 3 of the one or more codewords. 17. The method according to any one of claims 1-16, wherein the capability indication information indicates

or

, request to configure SRS with port number 1, or request SRS with virtualized type; or, The capability indication information indicates

, b takes the value 1 or

The power reduction factor is one. 18. The method according to any one of claims 1-17, wherein the capability indication information indicates

or

or

or

, request to configure SRS with port number 1, or request SRS with virtualized type; and/or, The capability indication information indicates

or

or

or

or

or

or

or

, request to configure the SRS with the number of ports 2, or request the SRS with the virtualized type; and/or, The capability indication information indicates

or

or

or

or

or

, request to configure two SRSs with a port number of 1, or request a virtualized SRS. 19. A communication method, comprising: Receiving capability indication information; The capability indication information is used to determine a power reduction factor, and the power reduction factor is the ratio of the actual transmit power sum of the n non-zero antenna ports to the channel transmit power. When the codeword reported in the capability indication information is indicated for PUSCH During transmission, the power reduction factor is 1, the maximum value of the transmission power of the channel is the maximum transmission power rated by the system, and n is a positive integer; The capability indication information is used to indicate one or more codewords. 20. The method of claim 19, further comprising: determining that the power reduction factor of the first data is 1; Send downlink control information DCI; wherein, the DCI is used to schedule the first data, and the code word used by the first data is the first bit of the capability indication information that takes a value of 1 and the first bit A codeword in a codeword or group of codewords to which a bit corresponds. 21. The method according to claim 19 or 20, wherein one or more codewords indicated by the capability indication information are represented as an N×A matrix, where A is the current number of transmission layers, and when N= When 2, the value of A is 1, and when N=4, the value of A is one or more of 1, 2 or 3; The status bits of the capability indication information correspond to one or a group of codewords; or, the bits of the capability indication information correspond to one or a group of codewords. 22. The method according to any one of claims 19 or 20, wherein the one or more codewords indicated by the capability indication information include codeword group 1, and the codeword group 1 includes the following codewords: at least one of:

where a takes the value 1 or

or, The one or more codewords indicated by the capability indication information include codeword group 2, and the codeword group 2 includes the following codewords:

Among them, the value of b is at least one of 1, -1, j, and -j. 23. The method of claim 19 or 20, wherein the one or more codewords indicated by the capability indication information include one or more of a first codeword group, and the first codeword group includes the following codewords At least one of:

Among them, the value of a is 1 or 2; or, The one or more codewords indicated by the capability indication information include one or more of the second codeword group, and the second codeword group includes the following codewords:

Among them, the value of b is

or 2; or, The one or more codewords indicated by the capability indication information include one or more of a third codeword group, where the third codeword group includes the following codewords:

Among them, the value of b is

or 2; or, The one or more codewords indicated by the capability indication information include one or more of a fourth codeword group, and the fourth codeword group includes

Wherein, the values of e, f, and g are respectively one or more of 1, -1, j, and -j; or, The one or more codewords indicated by the capability indication information include a fifth codeword group, where the fifth codeword group includes at least one of the following codewords:

Among them, the value of b is

or 2; or, The one or more codewords indicated by the capability indication information include a sixth codeword group, where the sixth codeword group includes at least one of the following codewords:

Wherein, the values of c1 and d1 are one or more of 1, -1, j, and -j respectively; or, The one or more codewords indicated by the capability indication information include a seventh codeword group, and the seventh codeword group includes the following codewords:

Among them, the value of e1, f1, g1, e2, f2, g2 is one or more of 1, -1, j, -j; or, The one or more codewords indicated by the capability indication information include an eighth codeword group, and the eighth codeword group includes the following codewords:

or, The one or more codewords indicated by the capability indication information include a ninth codeword group, and the ninth codeword group includes one or more of the following codewords:

or, The one or more codewords indicated by the capability indication information include a tenth codeword group, and the tenth codeword group includes one or more of the following codewords:

24. The method of claim 23, wherein The five status bits of the capability indication information respectively correspond to zero codewords, one codeword, two codewords, three codewords and four codewords in the first codeword group; or, The four bits of the capability indication information respectively correspond to the four codewords in the first codeword group; or, One bit of the capability indication information corresponds to part or all of the codewords in the second codeword group; or, One bit of the capability indication information corresponds to part or all of the codewords in the third codeword group; or, One bit of the capability indication information corresponds to part or all of the codewords in the fourth codeword group; or, One bit of the capability indication information corresponds to part or all of the codewords in the sixth codeword group; or, One bit of the capability indication information corresponds to some or all of the codewords in the seventh codeword group; or, One bit of the capability indication information corresponds to a codeword in the eighth codeword group; or, One bit of the capability indication information corresponds to some or all of the codewords in the ninth codeword group; or, One bit of the capability indication information corresponds to some or all of the codewords in the tenth codeword group; or, The two bits of the capability indication information respectively correspond to the two codewords in the codeword group 1; or, One bit of the capability indication information corresponds to one or more codewords in the codeword group 2 . 25. The method of claim 23, wherein The three codewords in the fifth codeword group respectively correspond to the three bits in the capability indication information, wherein, in the three codewords in the fifth codeword group, there are non-zero elements located in the Codewords for one line, second line, third line, and fourth line; or, The fifth codeword group includes one or more of the following codeword sets:

The set of codewords respectively corresponds to a status bit of the capability indication information. 26. The method according to any one of claims 19-25, wherein when the first bit of the capability indication information takes a value of 1 and DCI indicates one or a group corresponding to the first bit When the codeword is the codeword in the codeword, the power reduction factor of the first data is 1, wherein the first data is scheduled by the DCI. 27. The method according to any one of claims 19-26, wherein when the first bit of the capability indication information is 0 and the DCI indicates one or a group corresponding to the first bit When the codeword is the codeword in the codeword, the power reduction factor of the first data is n/M, or n/N, where the first data is scheduled by the DCI. 28. A communication device, comprising a processor coupled to a memory, wherein instructions are stored in the memory; The processor, when executing the instructions, causes the apparatus to perform the method of any one of claims 1 to 18. 29. A communication device, comprising a processor coupled to a memory, wherein instructions are stored in the memory; The processor, when executing the instructions, causes the apparatus to perform the method of any one of claims 19-27. 30. A computer-readable storage medium, characterized in that, computer-readable instructions are stored in the computer-storage medium, and when the computer reads and executes the computer-readable instructions, the computer is made to perform as claimed in claims 1-27 any of the methods described. 31. A communication method, comprising: Determine the capability indication information, where the capability indication information includes n bits corresponding to whether an additional SRS resource needs to be configured when the maximum rank value is n, and the number of SRS ports in the additionally configured SRS resource is less than the maximum number that the terminal device can support The number of SRS ports, the additionally configured SRS resources are used to enable the terminal to perform port virtualization; Send the capability indication information.

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